@article{SM_1989_63_1_a8,
     author = {V. V. Kozlov and D. V. Treshch\"ev},
     title = {On the integrability of {Hamiltonian} systems with toral position space},
     journal = {Sbornik. Mathematics},
     pages = {121--139},
     publisher = {mathdoc},
     volume = {63},
     number = {1},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1989_63_1_a8/}
}