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@article{PIM_1980_N_S_28_42_a13, author = {Aleksandar Krape\v{z}}, title = {Generalized {Associativity} on {Grupoids}}, journal = {Publications de l'Institut Math\'ematique}, pages = {105 }, publisher = {mathdoc}, volume = {_N_S_28}, number = {42}, year = {1980}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PIM_1980_N_S_28_42_a13/} }
Aleksandar Krapež. Generalized Associativity on Grupoids. Publications de l'Institut Mathématique, _N_S_28 (1980) no. 42, p. 105 . http://geodesic.mathdoc.fr/item/PIM_1980_N_S_28_42_a13/