@article{PMFA_1956_1_1_a5,
     author = {Markarjan, B. J.},
     title = {Nov\'e poznatky o otev\v{r}en\'ych hv\v{e}zdokup\'ach},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {33--50},
     year = {1956},
     volume = {1},
     number = {1},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1956_1_1_a5/}
}