@article{MV_1977_29_1_a14,
     author = {V. Sathyabhama},
     title = {Generalized distributivity equation on {GD-groupoids}},
     journal = {Matemati\v{c}ki vesnik},
     pages = {137 },
     year = {1977},
     volume = {29},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/MV_1977_29_1_a14/}
}