@article{AUPO_1965__6_1_a3,
     author = {Pe\v{r}ina, Jan},
     title = {Integr\'aln{\'\i} rovnice v teorii optick\'eho zobrazen{\'\i}},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {49--60},
     publisher = {mathdoc},
     volume = {06},
     number = {1},
     year = {1965},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/AUPO_1965__6_1_a3/}
}