1. Barker, J.A., Wright T.E.J., Fretwell, B.A., 2000. A pulsed-velocity method of double-porosity solute transport modelling. Tracers and Modelling in hydrogeology, IAHS Publication No. 262, 297-302. Proc. of Tra’M 2000 conference, Liege, Belgium.
2. Towards a Coherent Philosophy for Modelling the Environment;Beven;Proc. R. Soc. London. A,2002
3. Beaven, R.P., Barker, J.A., Hudson, A., 2003. Description of a tracer test through waste and application of a double porosity model, Sardinia 2003: Proc. of the Ninth International Waste Management and Landfill Symposium, Margherita di Pula, Cagliari, Sardinia, Italy
4. Beaven, R.P, Woodman, N., Barker, J., 2005. End-member flushing models for ‘saturated’ waste Proc. Sardinia 2005, Tenth International Waste Management and Landfill Symposium S. Margherita di Pula, Cagliari, Italy
5. Beaven, R.P., Barker, J.A., 2010. Scientific and management concepts in landfill flushing, Proc. of Waste 2010, Stratford-upon-Avon