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@article{PIM_1980_N_S_28_42_a18, author = {Josip E. Pe\v{c}ari\'c}, title = {On an {Inequality} of {P.m.} {Vasi\'c} and {R.r.} {Jani\'c}}, journal = {Publications de l'Institut Math\'ematique}, pages = {145 }, publisher = {mathdoc}, volume = {_N_S_28}, number = {42}, year = {1980}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PIM_1980_N_S_28_42_a18/} }
Josip E. Pečarić. On an Inequality of P.m. Vasić and R.r. Janić. Publications de l'Institut Mathématique, _N_S_28 (1980) no. 42, p. 145 . http://geodesic.mathdoc.fr/item/PIM_1980_N_S_28_42_a18/