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Bibliografia

1
Peter Hilton, Jean Pedersen, ``Build Your Own Polyhedra'', Addison Wesley (1988).

2
Jean J. Pedersen, 1973, ``Plaited Platonic Puzzles'', College Math Journal 4 N $^{\protect
\underline{\mbox{\protect \footnotesize o}}}$3, 22-37.

3
http://www.geom.umn.edu/docs/doyle/mpls/handouts/node19.html

4
Denis Weaire (ed.) ``The Kelvin Problem, foam structures of minimal surface area'', Taylor & Francis (1996) ISBN: 0-748-0632-8.

5
http://www.math.lsa.umich.edu/~hales/countdown/, Tamas Hausel, Endre Makai, Andras Szucs, 2000, ``Inscribing cubes and covering by rhombic dodecahedra via equivariant topology'' a publicar.

6
Ver o ficheiro kelvin-9tile-transp.html na directoria http://www.geom.umn.edu/graphics/pix/Special_Topics/Tilings/. Denis Weaire, Robert Phelan, 1994, ``A counterexample to Kelvin's conjecture on minimal surfaces'' Phil. Mag. Lett. 69 107-110.

7
Ver a página 161 do livro ``The Penguin Dictionary of Curious and Interesting Geometry'' de David Wells (1991) que mostra o icosaedro ortogonal de Jessen, também pontualmente flexível. Michael Goldberg, 1978, ``Unstable Polyhedral Structures'', Mathematics Magazine 51 N $^{\protect
\underline{\mbox{\protect \footnotesize o}}}$3, 165-170. Walter Wunderlich, 1979, ``Snapping and Shaky Antiprisms'', Mathematics Magazine, 52 N $^{\protect
\underline{\mbox{\protect \footnotesize o}}}$4, 235-236.

8
Robert Connelly, I. Sabitov, A. Walz, 1997, ``The Bellows Conjecture'', em ``Contributions to Algebra and Geometry'', 38 N $^{\protect
\underline{\mbox{\protect \footnotesize o}}}$1, 1-10.

9
Cauchy, 1813, Second Mémoire, J. École Polytechnique, 9 87, os poliedros convexos não podem ser flexíveis.

10
Robert Connely, 1979, ``How to Build a Flexible Polyhedral Surface'', em ``Geometric Topology'' Proceedings of the 1977 Georgia Topology Conference (Athens, Georgia), edit. James C. Cantrell, Academic Press, 675. Robert Connely, 1979, ``The Rigidity of Polyhedral Surfaces'', Mathematics Magazine, 52 N $^{\protect
\underline{\mbox{\protect \footnotesize o}}}$5, 275-283.

11
http://www.sgi.com/grafica/huffman/. David A. Huffman, 1976, ``Curvature and creases: A primer on paper'', IEEE Trans. Comput. C-25, 1010-1019

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L. Nobre G. 2002-07-16