By The Math Forum
By Inspectorate of Schools England
By Peter D. Grunwald, Jorma Rissanen
By Rainville, Earl D., Bedient, P.E.
By Murray Spiegel, Larry Stephens
By Frank Ayres, Elliott Mendelson
By Martin, Brian R.
By Mary L. Boas
By Neil Storey
By Chang C. Hang, etc.
By David M. Levine, David F. Stephan
By The Editors of Rea
By Alexander J. Walt, Robert F. Wilson
By Paul Sweeting (University of Kent, Canterbury)
By Gary Chartrand
By V.I. Arnold, Richard A. Silverman
By D C Spencer, David V. Widder
By Stuart J. Murphy, Frank Remkiewicz
By Robert L. Street (Stanford University), Gary Z. Watters (California State University, Chico), John K. Vennard
By Ross L. Finney, George B. Thomas
By Buttle J W, D. J. Daniels, P. J. Beckett
By Tom Apostol
By Peter M. Lee
By John Kruschke (Indiana University, Bloomington, USA)
By Heinz-Otto Peitgen, Hartmut Jurgens, Dietmar Saupe
By Heinz-Otto Peitgen, Hartmut Jurgens, Dietmar Saupe, Evan M. Maletsky, Terry Perciante
By Peter Riley, Colin Elgie, Linda Jones
By James A. Fitzsimmons, Mona J. Fitzsimmons
By Howard Anton
By Bill Cox (Aston University, UK)