Evans, Ellis, Ma, Matthew, Kingston, Lynda, Leharne, Stephen and Chowdhry, Babur (1992) The speciation pattern of lead in street dusts and soils in the vicinity of two London schools. Environment International: A Journal of Environmental Science, Risk & Health, 18 (2). pp. 153-162. ISSN 0160-4120 (doi:https://doi.org/10.1016/0160-4120(92)90003-M)

Leharne, Stephen, McPhee, Euan and Kingston, Lynda (1990) The pattern of metal deposition to a woodland ecosystem as revealed by bryophyte analysis. Environmental Monitoring and Assessment, 15 (2). pp. 131-141. ISSN 0167-6369 (Print), 1573-2959 (Online) (doi:https://doi.org/10.1007/BF00398911)