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@article{PIM_1959_S_S_XIII_13_a5, author = {Svetozar Kurepa}, title = {On {The} {Quadratic} {Functional}}, journal = {Publications de l'Institut Math\'ematique}, pages = {57 }, publisher = {mathdoc}, volume = {_S_S_XIII}, number = {13}, year = {1959}, url = {http://geodesic.mathdoc.fr/item/PIM_1959_S_S_XIII_13_a5/} }
Svetozar Kurepa. On The Quadratic Functional. Publications de l'Institut Mathématique, _S_S_XIII (1959) no. 13, p. 57 . http://geodesic.mathdoc.fr/item/PIM_1959_S_S_XIII_13_a5/