By Nelkon, Michael, Parker, Philip
By Russey, William E.
By Anthony C. Fischer-Cripps (Fischer-Cripps Laboratories Pty Ltd, Sydney, Australia)
By J.W. Warren
By Kerson Huang (Massachusetts Inst Of Tech, USA)
By ARTHUR BEISER
By Ken Price, Gerard Kelly
By School Mathematics Project
By George Mase
By J Breithaupt
By University of Cambridge Local Examinations Syndicate
By Stephen Pople
By Tom Pettit
By Beverly K. Hartline, Dongqi Li
By Beverly Karplus Hartline, Ariel Michelman-Ribeiro (Boston University)
By Mike Bowen-Jones, Ken Price
By Thane Gilmour, Glenn Hawkins
By Nigel Heslop, James Williams, George Snape, Marguerite F. Hall, David Brodie
By New Horizons Science