@article{MI_1989__109_190189, author = {{\CYRA}.{\CYRD}. {\CYRK}{\cyro}{\cyrl}{\cyre}{\cyrs}{\cyrn}{\cyri}{\cyrk}}, title = {{\CYRI}{\cyrn}{\cyrt}{\cyre}{\cyrr}{\cyrp}{\cyro}{\cyrl}{\cyrya}{\cyrc}{\cyri}{\cyrya} {\cyrp}{\cyrr}{\cyro}{\cyrc}{\cyre}{\cyrs}{\cyrs}{\cyra} {\cyrs}{\cyrl}{\cyru}{\cyrch}{\cyra}{\cyrishrt}{\cyrn}{\cyro}{\cyrg}{\cyro} {\cyrb}{\cyrl}{\cyru}{\cyrzh}{\cyrd}{\cyra}{\cyrn}{\cyri}{\cyrya} {\cyrm}{\cyre}{\cyrd}{\cyri}{\cyra}{\cyrn}{\cyra} {\cyrd}{\cyre}{\cyrr}{\cyre}{\cyrv}{\cyra}}, journal = {Matemati\v{c}eskie issledovani\^a}, pages = {36--42}, publisher = {mathdoc}, volume = {109}, year = {1989}, zbl = {0696.60068}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MI_1989__109_190189/} }