@article{PIM_1977_N_S_21_35_a27,
     author = {V. Sathyabhama},
     title = {Transitivity, {Associativity} {And} {Bisymmetry} {Equations} {On} {GD-Groupoids}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {175 },
     publisher = {mathdoc},
     volume = {_N_S_21},
     number = {35},
     year = {1977},
     url = {http://geodesic.mathdoc.fr/item/PIM_1977_N_S_21_35_a27/}
}