@article{TRSPY_2004_244_a6,
     author = {S. V. Gonchenko and D. V. Turaev and L. P. Shilnikov},
     title = {Existence of {Infinitely} {Many} {Elliptic} {Periodic} {Orbits} in {Four-Dimensional} {Symplectic} {Maps} with {a~Homoclinic} {Tangency}},
     journal = {Informatics and Automation},
     pages = {115--142},
     publisher = {mathdoc},
     volume = {244},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2004_244_a6/}
}