@article{MV_1959_11_1_a9,
     author = {D. Markovi\'c},
     title = {Povodom jedne nejednakosti {M.} {Petrovi\'ca}},
     journal = {Matemati\v{c}ki vesnik},
     pages = {45 },
     year = {1959},
     volume = {11},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/MV_1959_11_1_a9/}
}