@article{DE_2000_36_11_a3,
     author = {S. V. Gonchenko and L. P. Shilnikov},
     title = {Hyperbolic properties of four-dimensional symplectic mappings with a structurally unstable trajectory homoclinic to a fixed point of the saddle-focus type},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1464--1474},
     publisher = {mathdoc},
     volume = {36},
     number = {11},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2000_36_11_a3/}
}