@article{PMFA_1956_1_5-6_a19,
     author = {Havel, V\'aclav},
     title = {O definici st\v{r}echy stejn\'eho sp\'adu nad polygon\'aln{\'\i}m p\r{u}dorysem},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {697--699},
     year = {1956},
     volume = {1},
     number = {5-6},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1956_1_5-6_a19/}
}