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@article{PIM_1970_N_S_10_24_a17, author = {Petar M. Vasi\'c and Radovan R. Jani\'c}, title = {On {An} {Inequality} {Of} {N.} {Levinson}}, journal = {Publications de l'Institut Math\'ematique}, pages = {155 }, publisher = {mathdoc}, volume = {_N_S_10}, number = {24}, year = {1970}, url = {http://geodesic.mathdoc.fr/item/PIM_1970_N_S_10_24_a17/} }
Petar M. Vasić; Radovan R. Janić. On An Inequality Of N. Levinson. Publications de l'Institut Mathématique, _N_S_10 (1970) no. 24, p. 155 . http://geodesic.mathdoc.fr/item/PIM_1970_N_S_10_24_a17/