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@article{NM_2003_XLVIII_1-2_a8, author = {Dragan Trifunovi\'c}, title = {Matematika za u\v{c}itelje 4}, journal = {Nastava matematike}, pages = {42 }, publisher = {mathdoc}, volume = {XLVIII}, number = {1-2}, year = {2003}, language = {en}, url = {http://geodesic.mathdoc.fr/item/NM_2003_XLVIII_1-2_a8/} }
Dragan Trifunović. Matematika za učitelje 4. Nastava matematike, XLVIII (2003) no. 1-2, p. 42 . http://geodesic.mathdoc.fr/item/NM_2003_XLVIII_1-2_a8/