By Siklos, Stephen
By Ward, Stephen, Fannon, Paul
By Serena Alexander, Alexander, Serena
By Boyce, William E., DiPrima, Richard C.
By The Spode Group, Berry, John, Burghes, D. N., Huntley, Ian
By Blackett, Donald W.
By Nuffield Foundation
By Kangaroo Maths, JustMaths
By Getling, David
By J.D. Gatford, N. Phillips
By Edwards, Dilwyn, Hamson, Mike
By Turner, Peter R., Towers, David
By Allen, Myron B., Pinder, George F., Herrera, Ismaël
By Patilla, Peter
By Smith, G.R.Gilbart-, etc.
By Rayner, David
By Ludowyk, E.F. C.
By Dunham, WILLIAM
By Sarah Lindsay
By Smullyan, Raymond M.
By Heylings, M. R.
By Lewis, G.
By McArthur, Charles W.
By Rayner, D.
By Pate, Katherine, Norman, Naomi
By Beadsworth, Tony
By Brisoux, Francois, Brucker, Christian, Sanchez, Isabelle, Schwartz, Pierre, Guelfi, Pascal, Ikonikoff, Roman, Sigward, Eric
By Casti, John
By Rooney, Anne