@article{RM_1996_51_4_a15,
     author = {P. I. Topalov},
     title = {Critical points of the rotation function of an integrable {Hamiltonian} system},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {752--753},
     publisher = {mathdoc},
     volume = {51},
     number = {4},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1996_51_4_a15/}
}