@article{PMFA_1956__1_1_a9,
     author = {Rykov, S.},
     title = {Infra\v{c}erven\'e paprsky},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {73--76},
     publisher = {mathdoc},
     volume = {01},
     number = {1},
     year = {1956},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1956__1_1_a9/}
}