@article{RM_1995_50_1_a7,
     author = {V. V. Kalashnikov},
     title = {Topological classification of quadratic-integrable geodesic flows on a~two-dimensional torus},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {200--201},
     publisher = {mathdoc},
     volume = {50},
     number = {1},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1995_50_1_a7/}
}