@article{MV_1955_7_1-2_a1,
     author = {B. Ra\v{s}ajski},
     title = {Sistemi parcijalnih jedna\v{c}ina {II} reda},
     journal = {Matemati\v{c}ki vesnik},
     pages = {11 },
     publisher = {mathdoc},
     volume = {7},
     number = {1-2},
     year = {1955},
     url = {http://geodesic.mathdoc.fr/item/MV_1955_7_1-2_a1/}
}