@article{AM2_1987__34_137232,
     author = {Svetozar Kurepa},
     title = {On quadratic forms.},
     journal = {Aequationes mathematicae},
     pages = {125--138},
     publisher = {mathdoc},
     volume = {34},
     year = {1987},
     zbl = {0632.10021},
     url = {http://geodesic.mathdoc.fr/item/AM2_1987__34_137232/}
}