@article{MV_1968_20_4_a10,
     author = {P. M. Vasi\'c},
     title = {Sur une in\'egalit\'e de {M.} {Petrovi\'c}},
     journal = {Matemati\v{c}ki vesnik},
     pages = {473 },
     publisher = {mathdoc},
     volume = {20},
     number = {4},
     year = {1968},
     url = {http://geodesic.mathdoc.fr/item/MV_1968_20_4_a10/}
}