@article{NM_2005_L_4_a4,
     author = {Vladimir Jankovi\'c},
     title = {Kvadratne funkcije vi\v{s}e promenljivih},
     journal = {Nastava matematike},
     pages = {32 },
     publisher = {mathdoc},
     volume = {L},
     number = {4},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NM_2005_L_4_a4/}
}