Bibliography

1

Harold V. McIntosh, A Flexagon Glossary, 21 de Mayo, 2006.
http://cellular.ci.ulsa.mx/foro/viewtopic.php?t=94

2

Pook, L. Flexagons: Inside Out, New York: Cambridge University Press, 2003 (ISBN 0 521 52574-8)

3

Harold V. McIntosh, Tetragonal Flexagons, 31 de Octubre, 2000
http://delta.cs.cinvestav.mx/mcintosh/comun/tetragon/tetragon.html