By M W Roberts (Cardiff University, UK), John M Thomas (University of Cambridge
By Herbert Lieberman, Martin Rieger, Gilbert S. Banker
By Bengt Ljungqvist, Berit Reinmuller
By Derek Titherington, John G. Rimmer
By Ross C Mackay
By K. Leake, N.J. Henthorne
By Bourbousson, P.H.M., Leake, K.
By Hunter
By N G Stanley-Wood (University of Bradford), R W Lines (Coulter Electronics Ltd)
By John P. Lorimer
By R. Baird, Sally F. Bloomfield (London School of Hygiene, Cheshire, UK)
By Serope Kalpakjian, Stephen Schmid, Chih-Wah Kok
By E. Kahveci, T. Nichols
By Eric Croft
By Andrew Solway