@article{GDZPPN002055104,
title = {A criterion for divisibility of n-gons into k-gons.},
journal = {Commentarii mathematici Helvetici},
volume = {22},
year = {1949},
pages = {93-102},
zbl = {0031.17601},
url = {http://dml.mathdoc.fr/item/GDZPPN002055104}
}
Motzkin, Th.; Bernheim, B. A criterion for divisibility of n-gons into k-gons.. Commentarii mathematici Helvetici, Tome 22 (1949) pp. 93-102. http://gdmltest.u-ga.fr/item/GDZPPN002055104/