@article{CMUC_1967__8_1_a6,
     author = {Proch\'azka, Ladislav},
     title = {{\CYRP}{\cyrr}{\cyrya}{\cyrm}{\cyrery}{\cyre}  {\cyrs}{\cyru}{\cyrm}{\cyrm}{\cyrery} {\cyrg}{\cyrr}{\cyru}{\cyrp}{\cyrp} {\cyrt}{\cyri}{\cyrp}{\cyra}  ${\cal P}^+$},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {85--114},
     publisher = {mathdoc},
     volume = {08},
     number = {1},
     year = {1967},
     mrnumber = {0215921},
     zbl = {0207.33304},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1967__8_1_a6/}
}