@article{PMFA_1977_22_6_a1,
     author = {Kowalski, Old\v{r}ich},
     title = {Thomova v\v{e}ta o sedmi element\'arn{\'\i}ch katastrof\'ach},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {302--316},
     year = {1977},
     volume = {22},
     number = {6},
     mrnumber = {0478214},
     zbl = {0386.58007},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1977_22_6_a1/}
}