@article{PMFA_1960_5_4_a2,
     author = {H\'ajek, Otomar},
     title = {T\v{r}i principy indukce v matematice},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {385--394},
     year = {1960},
     volume = {5},
     number = {4},
     zbl = {0124.24804},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1960_5_4_a2/}
}