@article{KUKZ_1969_6_6_a21,
     author = {G. K. Stepantsov and V. M. Fomin and N. Kh. Khairullin},
     title = {{\CYRP}{\cyrr}{\cyri}{\cyrm}{\cyre}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyre}
},
     journal = {Trudy seminara po kraevym zada\v{c}am},
     pages = {195--202},
     publisher = {mathdoc},
     volume = {6},
     number = {6},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUKZ_1969_6_6_a21/}
}