@article{VMJ_2009_11_4_a6, author = {A. A. Makhnev and N. V. Chuksina}, title = {{\CYRO}{\cyrb} {\cyra}{\cyrv}{\cyrt}{\cyro}{\cyrm}{\cyro}{\cyrr}{\cyrf}{\cyri}{\cyrz}{\cyrm}{\cyra}{\cyrh} {\cyrs}{\cyri}{\cyrl}{\cyrsftsn}{\cyrn}{\cyro} {\cyrr}{\cyre}{\cyrg}{\cyru}{\cyrl}{\cyrya}{\cyrr}{\cyrn}{\cyro}{\cyrg}{\cyro} {\cyrg}{\cyrr}{\cyra}{\cyrf}{\cyra} {\cyrs} {\cyrp}{\cyra}{\cyrr}{\cyra}{\cyrm}{\cyre}{\cyrt}{\cyrr}{\cyra}{\cyrm}{\cyri} $(95,40,12,20)$}, journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal}, pages = {44--58}, publisher = {mathdoc}, volume = {11}, number = {4}, year = {2009}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/VMJ_2009_11_4_a6/} }