@article{DAN_1963_150_2_a36,
     author = {D. N. Shigorin and N. N. Shapetko and A. P. Skoldinov and T. S. Ryabchikova},
     title = {{\CYRP}{\cyro}{\cyrp}{\cyrr}{\cyra}{\cyrv}{\cyrk}{\cyri} {\cyrk}~{\cyrs}{\cyrt}{\cyra}{\cyrt}{\cyrsftsn}{\cyre} {``{\CYRP}{\cyrr}{\cyri}{\cyrr}{\cyro}{\cyrd}{\cyra}} $\mathrm{H}$-{\cyrs}{\cyrv}{\cyrya}{\cyrz}{\cyri} {\cyrv}~{\cyrs}{\cyri}{\cyrs}{\cyrt}{\cyre}{\cyrm}{\cyra}{\cyrh} {\cyrs}~$\pi$-{\cyrerev}{\cyrl}{\cyre}{\cyrk}{\cyrt}{\cyrr}{\cyro}{\cyrn}{\cyra}{\cyrm}{\cyri} {\cyri} {\cyre}{\cyre} {\cyrv}{\cyrl}{\cyri}{\cyrya}{\cyrn}{\cyri}{\cyre} 
},
     journal = {Doklady Akademii Nauk},
     pages = {230},
     publisher = {mathdoc},
     volume = {150},
     number = {2},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_150_2_a36/}
}