By Phillips, Richard
By Sole, Puzzles Numbers and Infinity Tim
By Bloom, Jonathan
By Clive Groome
By Robin J. Wilson, Wilson, Robin J.
By Tamminen, Terry
By Moscovich, Ivan
By Branley, Dr Franklyn M, Keller, Holly
By Rob Eastaway, John Haigh
By Allenby, R. B. J. T.
By Strogatz, Steven
By Andrew Viner
By Dudeney, H.E.
By Chernyak, Yuri B., Rose, Robert M.
By Weinstein, Lawrence, Adam, John A.
By Norris, Hazel
By Sautoy, Marcus du, Marcus Du Sautoy
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By Rob Eastaway
By Cadwell, J. H.
By Shasha, Dennis E.
By Martin, Ray, IMGS, Inc., Estate of Rosser Reeves
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By Wells, David
By Straker, Anita
By Brian Bolt, Bolt, Brian
By Carol A Thornton
By Blum, Raymond, Sinclair, Jeff