Hanson, Robert (2001) A model to predict the lifetime of pneumatic conveyor bends. PhD thesis, University of Greenwich.

Hanson, Robert and Patel, Mayur (2000) Development of a model to predict the life of pneumatic conveyor bends subject to erosive wear. In: Proceedings of the 2000 ASME Fluids Engineering Division Summer Meeting. ASME Symposia Volumes. FEDSM, 2 . American Society of Mechanical Engineers, New York, NY, USA, pp. 967-976. ISBN 9780791819791