@article{DAN_1990_314_2_a13,
     author = {V. G. Shironosov},
     title = {Stability of unstable states, bifurcations, chaos of nonlinear},
     journal = {Doklady Akademii Nauk},
     pages = {316--320},
     publisher = {mathdoc},
     volume = {314},
     number = {2},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_314_2_a13/}
}