%0 Journal Article %A M. A. Semenov-Tian-Shansky %T Classical $r$-matrices and the orbits method %J Zapiski Nauchnykh Seminarov POMI %D 1983 %P 77-91 %V 123 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1983_123_a5/ %G ru %F ZNSL_1983_123_a5