8.5 Garrafa de Klein
mathemamovies. The Adventures of the Klein Bottle. 2010. Disponível em: https://youtu.be/sRTKSzAOBr4. Acesso em: 07 jun. 2017.
Mathologer. A mirror paradox, Klein bottles and Rubik's cubes. 2015. Disponível em: https://youtu.be/4XN0V4xHaoQ. Acesso em: 07 jun. 2017.
Numberphile. Hunt for the Elusive 4th Klein Bottle - Numberphile. 2015. Disponível em: https://youtu.be/2g3sdzgSABM. Acesso em: 07 jun. 2017.
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