@article{PMFA_1987_32_2_a6,
     author = {John, Old\v{r}ich},
     title = {ISTAM 86 - {B\v{e}lehrad}},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {104--105},
     year = {1987},
     volume = {32},
     number = {2},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1987_32_2_a6/}
}