@article{MV_1969_21_1_a10,
     author = {J. D. Ke\v{c}ki\'c},
     title = {O jednoj klasi parcijalnih jedna\v{c}ina},
     journal = {Matemati\v{c}ki vesnik},
     pages = {71 },
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {1969},
     url = {http://geodesic.mathdoc.fr/item/MV_1969_21_1_a10/}
}