@article{RM_1972_27_3_a6,
     author = {V. S. Afraimovich and L. P. Shilnikov},
     title = {Singular trajectories of dynamical systems},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1972_27_3_a6/}
}