%0 Journal Article %A Hrmová, Renáta %T Partial groupoids with some associativity conditions %J Mathematica slovaca %D 1971 %P 285-311 %V 21 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_1971__21_4_a5/ %G en %F MASLO_1971__21_4_a5