@misc{PMFA_1964_9_2_a1,
     title = {Izochromatick\'e k\v{r}ivky [fotografie]},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {85},
     year = {1964},
     volume = {9},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1964_9_2_a1/}
}