@article{RM_1986_41_5_a18,
     author = {V. V. Kozlov},
     title = {The~splitting of separatrices and the generation of isolated periodic solutions in {Hamiltonian} systems with one-and-a-half degrees of freedom},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {149--150},
     publisher = {mathdoc},
     volume = {41},
     number = {5},
     year = {1986},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1986_41_5_a18/}
}