By Canadian Mathematics Competition
By J. A. C. Reynolds
By C. A. R. Bailey
By G. Matthews
By PM cohn
By P. P. Korovkin
By Peter Holmes
By BBC
By A. W. Plank
By casio
By J. C. Burkill
By J C Burkill
By R. L. Bolt
By du Sautoy, Marcus
By Tallack, Peter
By John D. Barrow
By Wolpert, L., Richards, Alison
By Edward Speyer
By Aczel, Amir D.
By M. F. Perutz
By Lionel Salem, Frederick Testard, Coralie Salem, James West
By Smoot, George, Davidson, George
By Fritz Rohrlich (Syracuse University, New York)
By Chown, Marcus
By Timothy Ferris, Clifton Fadiman
By New Scientist
By Arthur W. Wiggins
By Mandelbrot, Benoit B.
By Pain, HJ