By Charles Coulston Gillispie
By Bryan H. Bunch
By Darren Redfern
By Haines, R., Haines, B.
By Alexander Masters
By E.M. Peet
By Leonard Saunders, Robert Fleming
By Norbert Wiener (Massachusetts Institute of Technology)
By Leighton Thomas
By Carl B. Boyer, Uta C. Merzbach, U. Merzbach
By E. T. Bell, Underwood Dudley
By White, Michael, Rayner, David
By Heinz-Otto Peitgen, etc., H. Jurgens, D. Saupe (all of the University of Bremen, Germany)
By Richard Gillings
By School Mathematics Project
By Smith, P.
By E. Graham
By E.K.Victor Pearce
By B.K. Holdsworth
By Oliver Penrose, Peter Taylor
By CGP Books
By Connor, John, Soper, Pat