@article{120042,
author = {Lenka Poncov\'a},
title = {Gruppoidy s mul'tioperatorami},
journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
volume = {16},
year = {1977},
pages = {5-28},
zbl = {0393.08001},
mrnumber = {0505979},
language = {ru},
url = {http://dml.mathdoc.fr/item/120042}
}
Poncová, Lenka. Группоиды с мультиоператорами. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, Tome 16 (1977) pp. 5-28. http://gdmltest.u-ga.fr/item/120042/
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