@article{SM_1995_186_10_a7,
     author = {E. N. Selivanova},
     title = {Orbital isomorphisms of {Liouville} systems on a~two-dimensional torus},
     journal = {Sbornik. Mathematics},
     pages = {1531--1549},
     publisher = {mathdoc},
     volume = {186},
     number = {10},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1995_186_10_a7/}
}