@article{PMFA_1956_1_2_a4,
     author = {Chajkin, S. E.},
     title = {Radiov\'a astronomie},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {174--179},
     year = {1956},
     volume = {1},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1956_1_2_a4/}
}