@article{NM_1997_XLII_3-4_a5,
     author = {Zdravko Starc},
     title = {Osnovne trigonometrijske identi\v{c}nosti},
     journal = {Nastava matematike},
     pages = {56 },
     publisher = {mathdoc},
     volume = {XLII},
     number = {3-4},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NM_1997_XLII_3-4_a5/}
}