TY - JOUR AU - M. A. Semenov-Tian-Shansky TI - Classical $r$-matrices and the orbits method JO - Zapiski Nauchnykh Seminarov POMI PY - 1983 SP - 77 EP - 91 VL - 123 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1983_123_a5/ LA - ru ID - ZNSL_1983_123_a5 ER -