@article{PMFA_1957_2_2_a18,
     author = {Vacek, Karel},
     title = {N\v{e}kolik pozn\'amek ke studiu fysiky v {NDR}},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {260},
     year = {1957},
     volume = {2},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1957_2_2_a18/}
}