@article{01118066,
title = {Escher's combinatorial patterns.},
journal = {The Electronic Journal of Combinatorics [electronic only]},
volume = {4},
year = {1997},
zbl = {0886.05047},
language = {en},
url = {http://dml.mathdoc.fr/item/01118066}
}
Schattscheider, Doris. Escher's combinatorial patterns.. The Electronic Journal of Combinatorics [electronic only], Tome 4 (1997) . http://gdmltest.u-ga.fr/item/01118066/