@article{AM2_1972__8_136278,
     author = {Svetozar Kurepa},
     title = {On {Bimorphisms} and {Quadratic} {Forms} on {Groups.} {(Short} {Communications).}},
     journal = {Aequationes mathematicae},
     pages = {191--191},
     publisher = {mathdoc},
     volume = {8},
     year = {1972},
     zbl = {0256.20054},
     url = {http://geodesic.mathdoc.fr/item/AM2_1972__8_136278/}
}