@article{MV_1956_8_1-2_a7,
     author = {B. Popovi\'c},
     title = {Specialpertuboj de vektoraj elementoj de planedetorbito},
     journal = {Matemati\v{c}ki vesnik},
     pages = {47 },
     publisher = {mathdoc},
     volume = {8},
     number = {1-2},
     year = {1956},
     url = {http://geodesic.mathdoc.fr/item/MV_1956_8_1-2_a7/}
}