@article{RM_1989_44_2_a6,
     author = {S. A. Dovbysh},
     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 = {281--282},
     publisher = {mathdoc},
     volume = {44},
     number = {2},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1989_44_2_a6/}
}