By Stewart, Professor Ian
By Rachel Thomas, Marianne Freiberger
By Stephen Hawking
By Marcus Du Sautoy
By Elwes, Richard
By Paul Hambleton
By Clawson, Calvin C.
By Collins KS1
By Stewart, Ian
By Ian Stewart
By AIIA, Times Mind Games
By Gardner, Martin, Martin Gardner
By Martin Gardner, Dana Richards
By Daniel Tammet
By Fred Schuh, F. Gobel
By Rob Eastaway
By Graham Farmelo
By Amir D. Azcel
By Karl Fulves
By Gardner, Martin
By Danesi, Marcel
By Marcus Du Sautoy, du Sautoy, Marcus
By Pappas, Theoni
By The UK Mathematics Trust
By Mazur, Joseph
By Claire Publications
By Adler, Irit
By Shasha, Dennis E.