@article{INTF_1985_1_a1,
     author = {V. I. Arnol'd and Yu. S. Ilyashenko},
     title = {Ordinary differential equations},
     journal = {Itogi Nauki i Tekhniki. Seriya Sovremennye Problemy Matematiki. Fundamental'nye Napravleniya},
     pages = {7--140},
     year = {1985},
     volume = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTF_1985_1_a1/}
}