By P. Jeffries (Biological Laboratory, university of kent, UK), Peter Scott (CAB INTERNATIONAL)
By Rory Hillocks (Natural Resources Institute, University of Greenwich, UK), J Thresh (Natural Resources Institute, Anthony Bellotti (Centro Internacional de Agricultura Tropical (CIAT), Cali, Colombia)
By D.L. Hawksworth
By G.I. Pozniak
By Geoffrey Clough Ainsworth, G.R. Bisby
By I.A. Smith, etc., D.G. McNamara (both of the European and Mediterranean Plant Protection Organization (EPPO)), P.R. Scott, K.M. Harris (both of CAB International)
By Paul Kirk, Jr. (CABI, UK), Paul Cannon (CABI, J. David (CABI