By Keith Pledger, John Hebborn, Jean Littlewood
By Plumpton, Charles
By Christopher Jones, Peter Clamp
By Michael J.de Smith
By George Arfken (Miami University, USA)
By Phillips, A. C.
By Joseph, George Ghevarghese
By Attenborough, David
By Fauvel, John
By Dobinson, John
By Keith Pledger, et al, Pledger, Keith
By Peacocke, Arthur R.
By O'Kelly, Michael, Ratitch, Bohdana
By Wohlleben, Peter, Peter Wohlleben
By Russell, Andy
By Susie Jameson, Jameson, Susie
By Winston, Patrick Henry
By Stroud, K. A., K. A. Stroud
By Waltham, David
By N/A
By Poskitt, Kjartan, Watson, Richard
By Humphrey, Douglas, Topping, James
By Kangaroo Maths, JustMaths
By Smullyan, Raymond M.
By Cooper, Richard
By Gilder, Jules H.
By Woodward, Kath
By Hewlett, Gill