@misc{PMFA_1957_2_4_a0,
     title = {50 let {Fysik\'aln{\'\i}ho} \'ustavu {Karlovy} university {[Tituln{\'\i}} strana jubilejn{\'\i}ho \v{c}{\'\i}sla]},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {393},
     year = {1957},
     volume = {2},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1957_2_4_a0/}
}