@article{PMFA_1967_12_4_a12,
     author = {Ko\v{s}\v{t}\'al, Rostislav},
     title = {Sedm\'y semin\'a\v{r} pro u\v{c}itele fyziky \v{s}kol 2. cyklu v {Brn\v{e}}},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {255--256},
     year = {1967},
     volume = {12},
     number = {4},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1967_12_4_a12/}
}