Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1971__21_4_a5, author = {Hrmov\'a, Ren\'ata}, title = {Partial groupoids with some associativity conditions}, journal = {Mathematica slovaca}, pages = {285--311}, publisher = {mathdoc}, volume = {21}, number = {4}, year = {1971}, mrnumber = {0302787}, zbl = {0249.20037}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1971__21_4_a5/} }
Hrmová, Renáta. Partial groupoids with some associativity conditions. Mathematica slovaca, Tome 21 (1971) no. 4, pp. 285-311. http://geodesic.mathdoc.fr/item/MASLO_1971__21_4_a5/