Benson, M., Bennett, C.R., Harry, J.E., Patel, M.K. and Cross, M. (2000) The recovery mechanism of platinum group metals from catalytic converters in spent automotive exhaust systems. Resources, Conservation and Recycling, 31 (1). pp. 1-7. ISSN 0921-3449 (doi:10.1016/S0921-3449(00)00062-8)

Benson, M., Bennett, C.R., Patel, M.K., Harry, J.E. and Cross, M. (2000) Collector-metal behaviour in the recovery of platinum-group metals from catalytic converters. Transactions of the Institute of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy, 109 (1). pp. 6-10. ISSN 0371-9553 (Print), 1743-2855 (Online) (doi:10.1179/mpm.2000.109.1.6)