@article{PMFA_1981_26_5_a6,
     author = {Jevgrafov, M.},
     title = {A \v{s}lo v\r{u}bec o man\v{z}elstv{\'\i}?},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {280--284},
     year = {1981},
     volume = {26},
     number = {5},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1981_26_5_a6/}
}