@article{ZR_1993_5_13_a0,
     author = {Marica D. Pre\v{s}i\'c},
     title = {Formalne gramatike},
     journal = {Zbornik radova},
     pages = {3 },
     publisher = {mathdoc},
     volume = {5},
     number = {13},
     year = {1993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZR_1993_5_13_a0/}
}