@article{PMFA_1967__12_4_a1,
     author = {Urb\'anek, Zden\v{e}k},
     title = {K probl\'emu vzniku lok\'aln{\'\i}ch seskupen{\'\i} hmot v nestatick\'em modelu vesm{\'\i}ru},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {212--222},
     publisher = {mathdoc},
     volume = {12},
     number = {4},
     year = {1967},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1967__12_4_a1/}
}