@article{DAN_1975_224_5_a14,
     author = {L. P. Shilnikov},
     title = {Theory of the bifurcation of dynamical systems and dangerous boundaries},
     journal = {Doklady Akademii Nauk},
     pages = {1046--1049},
     publisher = {mathdoc},
     volume = {224},
     number = {5},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_224_5_a14/}
}