@article{PMFA_1978_23_5_a2,
     author = {Hudec, Ren\'e},
     title = {N\'astup rentgenov\'e astronomie},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {262--270},
     year = {1978},
     volume = {23},
     number = {5},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1978_23_5_a2/}
}