@article{PMFA_1998_43_2_a5,
     author = {de Castro, Rodrigo},
     title = {O {Erd\"osov\v{e}} \v{c}{\'\i}sle},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {130--135},
     year = {1998},
     volume = {43},
     number = {2},
     zbl = {1042.01535},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1998_43_2_a5/}
}