@article{DAN_1978_243_1_a4,
     author = {V. I. Luk'yanov and L. P. Shilnikov},
     title = {On some bifurcations of dynamical systems with homoclinic structures},
     journal = {Doklady Akademii Nauk},
     pages = {26--29},
     year = {1978},
     volume = {243},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_243_1_a4/}
}