@article{10_21136_CPM_1966_108103,
     author = {Pol\'akov\'a, Nad\v{e}\v{z}da},
     title = {Syst\'emy s vlastnost{\'\i} $\alpha$},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {205--216},
     year = {1966},
     volume = {91},
     number = {2},
     doi = {10.21136/CPM.1966.108103},
     mrnumber = {0196598},
     zbl = {0138.43304},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1966.108103/}
}