@article{SM_1989_62_2_a3,
     author = {A. V. Brailov and A. T. Fomenko},
     title = {The topology of integral submanifolds of completely integrable {Hamiltonian} systems},
     journal = {Sbornik. Mathematics},
     pages = {373--383},
     publisher = {mathdoc},
     volume = {62},
     number = {2},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1989_62_2_a3/}
}