@article{PMFA_1971_16_5_a6,
     author = {Ban{\'\i}k, Ivan},
     title = {Obrazov\'e formy zad\'avania fyzik\'alnych \'uloh},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {259--266},
     year = {1971},
     volume = {16},
     number = {5},
     language = {sk},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1971_16_5_a6/}
}