@article{RM_2007_62_2_a0,
     author = {G. N. Piftankin and D. V. Treschev},
     title = {Separatrix maps {in~Hamiltonian} systems},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {219--322},
     year = {2007},
     volume = {62},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2007_62_2_a0/}
}