@article{GDZPPN001251163,
title = {Relationships between conbinatorics and 0-simple semigroups.},
journal = {Semigroup forum},
volume = {12},
year = {1976},
pages = {78-82},
zbl = {0322.20029},
url = {http://dml.mathdoc.fr/item/GDZPPN001251163}
}
Pollatchek, A. Relationships between conbinatorics and 0-simple semigroups.. Semigroup forum, Tome 12 (1976) pp. 78-82. http://gdmltest.u-ga.fr/item/GDZPPN001251163/