By J. Schwarzenbach
By Tom Pettit
By Weinberg, Steven
By Joseph D. Bronzino (Trinity College, Hartford, Connecticut, USA)
By Bray, R N, Bates, A D, Land, J M
By R. B. Underdown
By R. B. Underdown, R.B. Underdown
By Bruce, Colin
By Ian Graham
By Ade Deane-Pratt
By Robert M. Koerner
By Snell, J.B.
By William D. Callister, Jr., David G. Rethwisch
By Lindsay Porter
By Smith, Peter, Begg, David
By Mohammad Modarres (University of Maryland, College Park, USA)
By Diana Bentley, Dee Reid, Jenny Bird
By Lyesse Laloui
By Aarathi Prasad
By P. Hammond