Cassava; Storage; Tanzania

Ndunguru, G. T., Graffham, A. J., Modaha, F., Rwiza, E., Bancroft, R. D. and Westby, A. (1998) The use of needs assessment methodologies to focus technical interventions in root and tuber crop post-harvest systems: a case study to improve incomes and reduce losses associated with marketing of fresh cassava from rural areas to Dar es Salaam. Project Report. Natural Resources Institute, University of Greenwich.

Cassava; Value chain; Smallholder; Scaling; Africa

Lamboll, Richard, Nelson, Valerie ORCID: https://orcid.org/0000-0003-1075-0238, Posthumus, Helena, Martin, Adrienne ORCID: https://orcid.org/0000-0001-9305-7302, Adebayo, Kolawole, Alacho, Francis, Dziedzoave, Nanam, Mahende, Grace, Sandifolo, Vito, Sanni, Lateef, Abayomi, Louise, Graffham, Andrew, Hillocks, Rory and Westby, Andrew (2015) Practical lessons on scaling up smallholder-inclusive and sustainable cassava value chains in Africa. Food Chain, 5 (1-2). pp. 28-52. ISSN 2046-1879 (Print), 2046-1887 (Online) (doi:10.3362/2046-1887.2015.004)

Cassava; Wild species; Cultivar; Leaf

Long, Yang, Guan-dong, Zhang, Yan-chao, Song, Westby, Andrew, Kai-mian, Li and Song-bi, Chen (2017) Nutrient and feed value analysis in leaves of cassava wild species and cultivars. Journal of Southern Agriculture, 48 (2). pp. 238-245. ISSN 2095-1191 (doi:10.3969/j:issn.2095-1191.2017.02.238)

GMP, HACCP, cassava, ‘fufu’, safety

Obadina, A.O., Oyewole, O.B., Sanni, L.O., Tomlins, K.I. and Westby, A. (2009) Improvement of the hygienic quality of wet 'fufu' produced in South West Nigeria. Food Control, 21 (5). pp. 639-643. ISSN 0956-7135 (doi:10.1016/j.foodcont.2009.09.009)

HQCF, rural markets, small-scale, CBSD, pasting properties

Abayomi, Louise A., Hillocks, Rory J., Gowda, M.N. ORCID: https://orcid.org/0000-0002-8060-866X and Westby, Andrew (2015) Impact of brown streak necrosis on cassava value addition. N/A. (Unpublished)

Ipomea batata (L.) Lam, carotenoids, bioaccessibility, cooking, vitamin A activity, β-carotene

Bechoff, Aurélie ORCID: https://orcid.org/0000-0001-8141-4448, Poulaert, Marie, Tomlins, Keith I., Westby, Andrew, Menya, Geoffrey, Young, Stephen and Dhuique-Mayer, Claudie (2011) Retention and bioaccessibility of β-carotene in blended foods containing orange-fleshed sweet potato flour. Journal of Agricultural and Food Chemistry, 59 (18). pp. 10373-10380. ISSN 0021-8561 (Print), 1520-5118 (Online) (doi:10.1021/jf201205y)

Ipomoea batatas (L.) Lam, carotenoid, storage, drying, cultivar

Bechoff, Aurélie ORCID: https://orcid.org/0000-0001-8141-4448, Westby, Andrew, Owori, Constance, Menya, Geoffrey, Dhuique-Mayer, Claudie, Dufour, Dominique and Tomlins, Keith (2009) Effect of drying and storage on the degradation of total carotenoids in orange-fleshed sweetpotato cultivars. Journal of the Science of Food and Agriculture, 90 (4). pp. 622-629. ISSN 0022-5142 (Print), 1097-0010 (Online) (doi:10.1002/jsfa.3859)

Manihot Esculenta Crantz; Consumer acceptance; Sensory properties; Quality traits; Genetics; Market

Bechoff, Aurélie ORCID: https://orcid.org/0000-0001-8141-4448, Tomlins, Keith, Fliedel, Geneviève, Lopez-Lavalle, Luis Augusto Becerra, Westby, Andrew, Hershey, Clair and Dufour, Dominique (2016) Cassava traits and end-user preference: relating traits to consumer liking, sensory perception, and genetics. Critical reviews in Food Science and Nutrition, 58 (4). pp. 547-567. ISSN 1040-8398 (Print), 1549-7852 (Online) (doi:10.1080/10408398.2016.1202888)

RUTF, malnutrition, bone, metabolomics, microbiome

Utume, Laura Nguoron, Janssen, Jerome Nicolas, Akomo, Peter, Shaw, Daisy, Edwards, Williams Joseph Samuel, Muleya, Molly, Nikolaou, Charoula Konstantia, Schneider, Aviv, Westby, Andrew, Reifen, Ram, Tsaousis, Anastasios D., Monsonego-Ornan, Efrat and Bechoff, Aurelie (2024) Toward holistic solutions to undernutrition: a comprehensive preclinical protocol for novel ready-to-use therapeutic foods testing. Methods and Protocols (MPs), 7. ISSN 2409-9279 (Online) (In Press)

Smallholders; Women; Cassava; Market; Wealth; Food security

Abdulsalam-Saghir, P., Sanni, L., Siwoku, B., Adebayo, K., Martin, A. M. ORCID: https://orcid.org/0000-0001-9305-7302 and Westby, A. (2012) Cassava: adding value for Africa - Strategic market initiatives that support wealth creation for women along the Cassava Value Chains in Southwest, Nigeria. Journal of Agricultural Science and Environment, 12 (2). pp. 70-82. ISSN 2277-2755 (Print), 2315-7453 (Online)

Uncertainty, Nigeria, Adaptation, Smallholder farmers, High quality cassava flour, Inclusive value chains, Processors

Lamboll, Richard, Martin, Adrienne ORCID: https://orcid.org/0000-0001-9305-7302, Sanni, Lateef, Adebayo, Kolawole, Graffham, Andrew, Kleih, Ulrich, Abayomi, Louise and Westby, Andrew (2018) Shaping, adapting and reserving the right to play: Responding to uncertainty in high quality cassava flour value chains in Nigeria. Journal of Agribusiness in Developing and Emerging Economies, 8 (1). pp. 54-76. ISSN 2044-0839 (doi:10.1108/JADEE-03-2017-0036)

[beta]-amylase, sweet potato, varieties

Dziedzoave, N.T., Graffham, A.J., Westby, A., Otoo, J. and Komlaga, G. (2010) Influence of variety and growth environment on β-amylase activity of flour from sweet potato (Ipomea batatas). Food Control, 21 (2). pp. 162-165. ISSN 0956-7135 (doi:10.1016/j.foodcont.2009.05.005)

asparagus, thrips (Thrips tabaci), heat treatments, high CO2

Simantara, P., Rees, D. ORCID: https://orcid.org/0000-0003-3541-0424 and Westby, A. (2010) Potential non-chemical methods for use against thrips (Thrips tabaci) in green asparagus. In: Herppich, W.B., (ed.) Proceedings of the Third International Conference Postharvest Unlimited 2008. Acta Horticulturae (858). International Society for Horticultural Science, Leuven, Belgium, pp. 325-328. ISBN 978-90-66052-06-2 ISSN 0567-7572

assessment, methodology, root, tuber, postharvest, marketing, handling, cassava, Dar es Salaam, Tanzania

Ndunguru, G.T., Modaha, F., Bancroft, R.D., Mashamba, F., Digges, P.D., Kleih, U. and Westby, A. (1995) The use of needs assessment methodologies to focus technical interventions in root and tuber crop post-harvest systems: a case study to improve the marketing and post-harvest handling of cassava entering Dar es Salaam, Tanzania. In: International Society of Tropical Root Crops - Africa Branch Meeting, 23-27 Oct 1995, Lilongwe, Malawi.

biofortified cassava, sensory profiling, consumer acceptance, red palm oil

Bechoff, Aurélie ORCID: https://orcid.org/0000-0001-8141-4448, Chijioke, Ugo, Westby, Andrew and Tomlins, Keith Ian (2018) ‘Yellow is good for you’: Consumer perception and acceptability of fortified and biofortified cassava products. PLoS ONE, 13 (9):e0203421. pp. 1-22. ISSN 1932-6203 (Online) (doi:10.1371/journal.pone.0203421)

biofortified cassava; carotenoids; gari; true retention; moisture removal; leaching of soluble solid

Bechoff, Aurélie ORCID: https://orcid.org/0000-0001-8141-4448, Tomlins, Keith Ian, Chijioke, Ugo, Ilona, Paul, Westby, Andrew and Boy, Erick (2018) Physical losses could partially explain modest carotenoid retention in dried food products from biofortified cassava. PLoS ONE:e0194402. ISSN 1932-6203 (Online) (doi:10.1371/journal.pone.0194402)

carotenoid degradation, biofortified cassava, gari, palm oil, storage, temperature, model prediction, vitamin A deficiency, nutritional impact, food composition

Bechoff, Aurelie ORCID: https://orcid.org/0000-0001-8141-4448, Chijioke, Ugo, Tomlins, Keith I., Govinden, Pesila, Ilona, Paul, Westby, Andrew and Boy, Erick (2015) Carotenoid stability during storage of yellow gari made from biofortified cassava or with palm oil. Journal of Food Composition and Analysis, 44. pp. 36-44. ISSN 0889-1575 (doi:10.1016/j.jfca.2015.06.002)

carotenoids, dried sweet potato, Ipomoea batatas L, kinetics, Norisoprenoids, oxygen, storage, temperature, volatile compounds, water activity

Bechoff, Aurélie ORCID: https://orcid.org/0000-0001-8141-4448, Dhuique-Mayer, Claudie, Dornier, Manuel, Tomlins, Keith I., Boulanger, Renaud, Dufour, Dominique and Westby, Andrew (2010) Relationship between the kinetics of β-carotene degradation and formation of norisoprenoids in the storage of dried sweet potato chips. Food Chemistry, 121 (2). pp. 348-357. ISSN 0308-8146 (doi:10.1016/j.foodchem.2009.12.035)

carotenoids, drying, Ipomea batata (L.) Lam, on-farm, on-research, storage

Bechoff, Aurelie ORCID: https://orcid.org/0000-0001-8141-4448, Tomlins, Keith, Dhuique-Mayer, Claudie, Dove, Richard and Westby, Andrew (2010) On-farm evaluation of the impact of drying and storage on the carotenoid content of orange-fleshed sweet potato (Ipomea batata Lam.). International Journal of Food Science & Technology, 46 (1). pp. 52-60. ISSN 0950-5423 (Print), 1365-2621 (Online) (doi:10.1111/j.1365-2621.2010.02450.x)

carotenoids, provitamin A retention, drying, sun, solar, hot air, vitamin A activity, sweetpotato

Bechoff, A. ORCID: https://orcid.org/0000-0001-8141-4448, Dufour, D., Dhuique-Mayer, C., Marouzé, C., Reynes, M. and Westby, A. (2008) Effect of hot air, solar and sun drying treatments on provitamin A retention in orange-fleshed sweetpotato. Journal of Food Engineering, 92 (2). pp. 164-171. ISSN 0260-8774 (doi:10.1016/j.jfoodeng.2008.10.034)

cassava, fufu, flour, Nigeria, West Africa, sensory evaluation, consumer preference, acceptability

Tomlins, Keith, Sanni, Lateef, Oyewole, Olusola B., Dipeolu, Adewale, Ayinde, Idris, Adebayo, Kolawole and Westby, Andrew (2007) Consumer acceptability and sensory evaluation of a fermented cassava product (Nigerian fufu). Journal of the Science of Food and Agriculture, 87 (10). pp. 1949-1956. ISSN 0022-5142 (doi:10.1002/jsfa.2941)

cassava, manihot esculenta, fufu, processing, postharvest, storage, loss, agriculture, cyanogen

Bainbridge, Z. and Westby, A. (1996) Improved cassava processing technology: Final technical report. Technical Report. Natural Resources Institute, Chatham, UK.

cassava, wet fufu, CCP, food safety, hazards

Obadina, A.O., Oyewole, O.B., Sanni, L.O., Tomlins, K.I. and Westby, A. (2007) Identification of hazards and critical control points (CCP) for cassava fufu processing in South-West Nigeria. Food Control, 19 (1). pp. 22-26. ISSN 0956-7135 (doi:10.1016/j.foodcont.2007.01.002)

cassava; cassava flour; value chains; smallholders; quality; agricultural extension services;

Adebayo, K., Abayomi, L., Abass, A., Dziedzoave, N.T., Forsythe, L. ORCID: https://orcid.org/0000-0001-9931-4453, Hillocks, R.J., Gensi, R., Gibson, R.W., Graffham, A.J., Ilona, P., Kleih, U.K., Lamboll, R.I., Mahende, G., Martin, A.M. ORCID: https://orcid.org/0000-0001-9305-7302, Onumah, G.E., Orr, A.W., Posthumus, H., Sanni, L.O., Sandifolo, V. and Westby, A. (2010) Sustainable inclusion of smallholders in the emerging high quality cassava flour value chains in Africa: challenges for agricultural extension services. Journal of Agricultural Extension, 14 (1). pp. 1-10. ISSN 1119-944X

chlorophyll fluorescence, postharvest, Fv/Fm, chilling injury, heat stress, photoinhibition, cucumber, pepper, asparagus, apple

Rees, D. ORCID: https://orcid.org/0000-0003-3541-0424, Simantara, P., Ross, M., Brownridge, S., Westby, A., Johnson, D. and Poole, R. (2010) Seeking a robust strategy to use chlorophyll fluorescence to assess physiological damage of fresh produce. In: Herppich, W.B., (ed.) Proceedings of the Third International Conference Postharvest Unlimited 2008. Acta Horticulturae (858). International Society for Horticultural Science, Leuven, Belgium, pp. 399-406. ISBN 978-90-66052-06-2 ISSN 0567-7572

drying, storage, sweet potato, carotenoid losses

Bechoff, Aurélie ORCID: https://orcid.org/0000-0001-8141-4448, Westby, Andrew, Dufour, Dominique, Dhuique-Mayer, Claudie, Marouzé, C., Owori, Constance, Menya, Geoffrey and Tomlins, Keith (2007) Effect of drying and storage on the content of provitamin A of orange fleshed sweet potato (Ipomoa batatas): direct sun radiations do not have significant impact. In: 10th Triennial Symposium of the International Society for Tropical Root Crops - African Branch (ISTRC-AB), 8-12 Oct 2007, Maputo, Mozambique. (Unpublished)

food security, UK food system, post-farm gate activities, stakeholder world views, priority setting, evidence gaps

Ingram, John S.I., Wright, Hugh L., Foster, Lucy, Aldred, Tim, Barling, David, Benton, Tim G., Berryman, Paul M., Bestwick, Charles S., Bows-Larkin, Alice, Brocklehurst, Tim F., Buttriss, Judith, Casey, John, Collins, Hannah, Crossley, Daniel S., Dolan, Catherine S., Dowler, Elizabeth, Edwards, Robert, Finney, Karen J., Fitzpatrick, Julie L., Fowler, Mark, Garrett, David A., Godfrey, Jim E., Godley, Andrew, Griffiths, William, Houlston, Eleanor J., Kaiser, Michel J., Kennard, Robert, Knox, Jerry W., Kuyk, Andrew, Linter, Bruce R., Macdiarmid, Jennie I., Martindale, Wayne, Mathers, John C., McGonigle, Daniel F., Mead, Angela, Millar, Samuel J., Miller, Anne, Murray, Calum, Norton, Ian T., Parry, Stephen, Pollicino, Marilena, Quested, Thomas E., Tassou, Savvas, Terry, Leon A., Tiffin, Richard, van de Graaf, Pieter, Vorley, William, Westby, Andrew and Sutherland, William J. (2013) Priority research questions for the UK food system. Food Security, 5 (5). pp. 617-636. ISSN 1876-4517 (Print), 1876-4525 (Online) (doi:10.1007/s12571-013-0294-4)

ipomoea batatas, ethylene, gibberellins

Cheema, M.U.A., Rees, D. ORCID: https://orcid.org/0000-0003-3541-0424, Westby, A. and Taylor, M. (2010) Hormonal control of sprouting of sweetpotatoes in storage. In: Herppich, W.B., (ed.) Proceedings of the Third International Conference Postharvest Unlimited 2008. Acta Horticulturae (858). International Society for Horticultural Science, Leuven, Belgium, pp. 173-177. ISBN 978-90-66052-06-2 ISSN 0567-7572

livelihood, poor, poverty, sweet potato, Tanzania, marketing, production, handling, supply, seasonality, postharvest, crop management, Ipomoea batatas

Ndunguru, G. T., Meku, S., Ngendello, T., Westby, A. and Mwaisela, F. (2003) An update of information on market characteristics of sweet potato in the Lake and Eastern Zones of Tanzania. [Working Paper]

malts, enzymes, cereals

Dziedzoave, N.T., Graffham, A.J., Westby, A. and Komlaga, G. (2010) Comparative assessment of amylolytic and cellulolytic enzyme activity of malts prepared from tropical cereals. Food Control, 21 (10). pp. 1349-1353. ISSN 0956-7135 (doi:10.1016/j.foodcont.2010.04.008)

non-grain starch staples, root and tuber crops, sweet potato, cassava, banana, plantain, yam, cocoyam, sampling, laboratory methods, food safety, food analysis, quality assessment, needs assessment, analytical methods

Bainbridge, Z., Tomlins, K., Wellings, K. and Westby, A. (1996) Methods for assessing quality characteristics of non-grain starch staples. (Part 2. Field Methods.). Methods for assessing quality characteristics of non-grain starch staples. Natural Resources Institute, Chatham, Kent, pp. 1-32. ISBN 0-85954-400-1

Bainbridge, Z., Tomlins, K., Wellings, K. and Westby, A. (1996) Methods for assessing quality characteristics of non-grain starch staples. (Part 4. Advanced methods.). Methods for assessing quality characteristics of non-grain starch staples. Natural Resources Institute, Chatham, Kent. ISBN 0-85954-400-1

Bainbridge, Z., Tomlins, K., Wellings, K. and Westby, A. (1996) Methods for assessing quality characteristics of non-grain starch staples. (Part 1. Introduction.). Methods for assessing quality characteristics of non-grain starch staples. Natural Resources Institute, Chatham, Kent, pp. 1-16. ISBN 0-85954-400-1

Bainbridge, Z., Tomlins, K., Wellings, K. and Westby, A. (1996) Methods for assessing quality characteristics of non-grain starch staples. (Part 3. Laboratory methods.). Methods for assessing quality characteristics of non-grain starch staples. Natural Resources Institute, Chatham, Kent. ISBN 0-85954-400-1

orange fleshed sweet potato, (OFSP), Uganda, Mozambique, vitamin A deficiency

Arimond, Mary, Ball, Anna‐Marie, Bechoff, Aurelie ORCID: https://orcid.org/0000-0001-8141-4448, Bosch, Diane, Brauw, Alan, Coote, Claire, Dove, Richard, Eozenou, Patrick, Gilligan, Dan, Hotz, Christine, Kumar, Neha, Labarta, Ricardo, Loechl, Cornelia, Low, Jan, Magezi, Sylvia, Massingue, Jaquelino, Meenakshi, J.V., Moursi, Mourad, Musoke, Charles, Namanda, Sam, Nsubuga, Harriet, Okwadi, Juliues, Tomlins, Keith, Wamaniala, Martin and Westby, Andrew (2010) Reaching and engaging end users (REU): orange fleshed sweet potato (OFSP) in East and Southern Africa. Project Report. HarvestPlus / Consultative Group on International Agricultural Research (CGIAR), Washington, DC, USA.

orange-fleshed sweet potato, carotenoid degradation, drying, storage

Bechoff, A. ORCID: https://orcid.org/0000-0001-8141-4448, Tomlins, K.I., Dhuique-Mayer, C. and Westby, A. (2009) Understanding losses of provitamin A after drying and storage of orange-fleshed sweetpotato (Ipomea batatas). In: The Fifteenth Symposium of the International Society for Tropical Root Crops, 2-6 Nov 2009, Lima, Peru.

orange-fleshed sweet potato, flour, amala, consumption pattern

Fetuga, Ganiyat O., Tomlins, Keith, Bechoff, Aurelie ORCID: https://orcid.org/0000-0001-8141-4448, Henshaw, Folake O., Idowu, Michael A. and Westby, Andrew (2013) A survey of traditional processing of sweet potato flour for amala, consumption pattern of sweet potato amala and awareness of orange-fleshed sweet potato (OFSP) in South West Nigeria. Journal of Food, Agriculture & Environment, 11 (3 & 4). pp. 67-71. ISSN 1459-0255 (Print), 1459-0263 (Online)

postharvest, non-grain starch staples, food crop, participatory rural appraisal, needs assessment, development, rural, agriculture

Kleih, U., Digges, P. and Westby, A. (1997) Assessment of the needs and opportunities in post-harvest systems of non-grain starch staple food crops. Manual. Natural Resources Institute, Chatham, UK.

pre-treatment, drying, storage, orange-fleshed sweet potato (OFSP), carotenoids, sodium metabisulfite, leaching

Bechoff, Aurélie ORCID: https://orcid.org/0000-0001-8141-4448, Westby, Andrew, Menya, Geoffrey and Tomlins, Keith I. (2011) Effect of pretreatments for retaining total carotenoids in dried and stored orange-fleshed-sweet potato chips. Journal of Food Quality, 34 (4). pp. 259-267. ISSN 1745-4557 (online) (doi:10.1111/j.1745-4557.2011.00391.x)

sensory evaluation, sweet potato, Ipomoea batatas, carotenoid, dry matter, logarithm

Tomlins, Keith, Owori, Constance, Bechoff, Aurelie ORCID: https://orcid.org/0000-0001-8141-4448, Menya, Geoffrey and Westby, Andrew (2011) Relationship among the carotenoid content, dry matter content and sensory attributes of sweet potato. Food Chemistry, 131 (1). pp. 14-21. ISSN 0308-8146 (doi:10.1016/j.foodchem.2011.07.072)

sweet potato, East Africa, Tanzania, Ipomoea batatas, storage, pit, heap, farmer, participation, on-farm

Tomlins, Keith, Ndunguru, Gabriel, Kimenya, F., Ngendello, Theresia, Rwiza, Elizabeth, Amour, Rahila, van Oirschot, Quirien E.A. and Westby, Andrew (2007) On-farm evaluation of methods for storing fresh sweet potato roots in East Africa. Tropical Science, 47 (4). pp. 197-210. ISSN 0041-3291 (doi:10.1002/ts.214)

sweet potato, handling, curing, damage, shelf-life, weight loss, Ipomoea batatas, storage, post-harvest, breaks, skinning injury

Westby, Andrew (2001) Improving the quality and value of non-grain starch staples (Final technical report). Technical Report. Natural Resources Institute, Chatham, UK.

sweetpotato, 1-methylcyclopropene, aminoethoxyvinylglycine ethylene, respiration, sprouting

Cheema, M.U.A., Rees, D. ORCID: https://orcid.org/0000-0003-3541-0424, Colgan, R.J. ORCID: https://orcid.org/0000-0002-0653-5845, Taylor, M. and Westby, A. (2013) The effects of ethylene, 1-MCP and AVG on sprouting in sweetpotato roots. Postharvest Biology and Technology, 85. pp. 89-93. ISSN 0925-5214 (doi:10.1016/j.postharvbio.2013.05.001)

sweetpotato, Ipomea batatas, β-carotene, vitamin A, sensory evaluation, consumer acceptability

Tomlins, Keith, Ndunguru, Gabriel, Stambul, Kimboka, Joshua, Neema, Ngendello, Theresia, Rwiza, Elizabeth, Amour, Rahila, Ramadhani, Bundala, Kapande, Asia and Westby, Andrew (2007) Sensory evaluation and consumer acceptability of pale-fleshed and orange-fleshed sweetpotato by school children and mothers with preschool children. Journal of the Science of Food and Agriculture, 87 (13). pp. 2436-2446. ISSN 0022-5142 (doi:10.1002/jsfa.2931)

traditional practices, cassava, gari processing, survey, direct measurement

Bechoff, Aurelie ORCID: https://orcid.org/0000-0001-8141-4448, Tomlins, Keith I., Bennett, Ben and Westby, Andrew (2019) Variability in traditional processing of gari: a major food security product from cassava. Food Chain, 8 (1). pp. 39-59. ISSN 2046-1887 (Print), 2046-1879 (Online) (doi:10.3362/2046-1887.18-00015)

tropical root crops, post-harvest

Rees, Debbie ORCID: https://orcid.org/0000-0003-3541-0424, Westby, Andrew, Tomlins, Keith, Van Oirschot, Quirien, Cheema, Muhammad U.A., Cornelius, Eric and Amjad, Mohammad (2012) Tropical root crops. In: Rees, Debbie ORCID: https://orcid.org/0000-0003-3541-0424, Farrell, Graham and Orchard, John, (eds.) Crop Post-harvest: Science and Technology, Perishables. Wiley-Blackwell, Chichester, UK, pp. 392-413. ISBN 9780632057252