Further Questions about Tetrads
Where can I read more about tetrads?

References

[1]   Michael R. W. Buckley, Journal of Recreational Mathematics 8, No. 4, 1975/76, pp. 312-313

[2]   Martin Gardner, Scientific American 236, April 1977, pp. 130-132

[3]   Karl Scherer, Frank Rubin and Scott Kim, Journal of Recreational Mathematics 10 No. 4, 1977/78, p. 287

[4]   Martin Gardner, Penrose Tiles To Trapdoor Ciphers, edition updated and revised from the 1989 W.H. Freeman edition, published by the Mathematical Association of America in 1997, pp. 121-123, 129-131, 135-136, 310-311 and Errata Sheet

[5]   Heinrich Hemme, Die Quadrate des Teufels, 2005, Göttingen 2005, 2nd edition, pp. 14-15, 55-56

[6]   Karl Scherer, "Tetrads", Wolfram Demonstrations Project, published: April 14 2008
http://demonstrations.wolfram.com/Tetrads/

[7]   George Sicherman, Polyform Tetrads, http://userpages.monmouth.com/~colonel/tetrads/tetrads.html

[8]   Cibulis, A., Čerņenoks, J. (2012), Tetrads - it is not so easy, MCG Newsletter 3, October, 2012, pp. 23-28.
http://www.brgkepler.at/~geretschlaeg/MCG_Newsletter_3.pdf

[9]   Čerņenoks, J., Cibulis, A. (2013). Application of IT in Mathematical Proofs and in Checking of Results of Pupils' Research, Proceedings of the 6th International Conference on Applied Information and Communication Technologies, Jelgava, Latvia, pp. 172-177.
http://alephfiles.rtu.lv/TUA01/000040029_e.pdf

[10]   Juris Čerņenoks, Andrejs Cibulis, Tetrads and their Counting, Baltic J. Modern Computing, Vol. 6 (2018), No. 2, pp. 96-106
https://doi.org/10.22364/bjmc.2018.6.2.01

[11]   Scott Kim, Ask a different question, slides 42-56
https://www.scottkim.com/

[12]   Jean-Paul Delahaye, Pour La Sience No. 507, January 2020, pp. 80-85

[13]   Casey Mann, The American Mathematical Monthly, Vol. 109, No. 4, April 2002, pp. 383-388

[14]   Heinz Voderberg (1911-1945)
https://en.wikipedia.org/wiki/Voderberg_tiling

[15]   Heinz Voderberg, Zur Zerlegung der Umgebung eines ebenen Bereiches in kongruente. ,
Jahresbericht der Deutschen Mathematiker-Vereinigung (1936), Vol. 46, pp. 229-231



Acknowledgements

I would like to thank the following friends for their helpful suggestions and corrections:
- Craig Knecht
- William Walkington (https://carresmagiques.blogspot.com/)
- Greg Huber


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 Walter Trump, Nürnberg, Germany, ms(at)trump.de, © 2020-02-12 (last modified: 2020-02-14)