Ariza-Zafra, K., Berry, R., Bradley, M.S.A. and Santana, J.C. (2010) Achieving mass flow in silos with shallow converging sections using inverted cones. Bulk Solids Handling (Whitepaper). ISSN 0173-9980

Ariza-Zafra, K., Berry, Robert and Bradley, Michael S. A. (2008) Review of models for predicting the discharge rates of bulk particulates from silos and bins. Proceedings of the International Symposium Reliable Flow of Particulate Solids IV (RELPOWFLO IV) (Tromso, Norway 10-12 June, 2008). Telemark University College, Telemark, pp. 484-492. ISBN 9788272062896