References
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- Rigby , JF . 1998 . Math. Intelligencer , 20–21 : 4
- de Las Peñas , MLAN and Felix , RP . 2003 . Southeast Asian Bull. Math. , 27 : 603
- M.L.A.N. de Las Peñas, R.P. Felix and M.V.P. Quilinguin, A framework for coloring symmetrical patterns, in Algebras and Combinatorics: An International Congress, ICAC’97, Hong Kong, Springer-Verlag, Singapore, 1999.
- Felix , RP and Loquias , MJC . 2008 . Z. Kristallogr. , 223 : 483
- Frettlöh , D . 2008 . Z. Kristallogr. , 223 : 773
- Lück , R and Frettlöh , D . 2008 . Z. Kristallogr. , 223 : 782
- The GAP Group, GAP (Groups, Algorithms, and Programming); software available at http://www.gap-system.org.