@article{MAT_1967_11_4_a5,
     author = {S. Smale},
     title = {Structurally stable systems are not dense},
     journal = {Matematika},
     pages = {107--112},
     publisher = {mathdoc},
     volume = {11},
     number = {4},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1967_11_4_a5/}
}