@article{ZNSL_1983_123_a5,
     author = {M. A. Semenov-Tian-Shansky},
     title = {Classical $r$-matrices and the orbits method},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {77--91},
     publisher = {mathdoc},
     volume = {123},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1983_123_a5/}
}