@article{IM_1981__63_142805,
     author = {M. Semenov-Tian-Shansky and A.G. Reyman},
     title = {Reduction of {Hamiltonian} {Systems,} {Affine} {Lie} {Algebras} and {Lax} {Equations} {II.}},
     journal = {Inventiones mathematicae},
     pages = {423--432},
     publisher = {mathdoc},
     volume = {63},
     year = {1981},
     zbl = {0442.58016},
     url = {http://geodesic.mathdoc.fr/item/IM_1981__63_142805/}
}