By Wilbert Reimer
By McQuarrie D.
By Peter Dawson, David O. Cosgrove, Ronald G Grainger
By Victor Bulmer-Thomas
By Dominic Tombs
By Serena Alexander
By F.R. Heathcote, Heathcote, F R
By E. Owen, A. Kitalyi, N. Jayasuirya, T. Smith
By The UK Mathematics Trust
By Ian Lucas, Lucas, Ian
By Ashby Merson-Davies
By Martin Bluemel
By Bert Bielefeld, Isabella Skiba
By Isabel Kuhl
By R. K. Verma
By Alonso Salazar
By J Jobbins
By Duncan, Tom, Kennett, Heather, Tom Duncan, Heather Kennett
By Tortora, Gerard J., Gerard J. Tortora