@article{MAT_1969_13_1_a6,
     author = {J.-C. Tougeron},
     title = {Stabilit\'e des applications diff\'erentiables},
     journal = {Matematika},
     pages = {111--121},
     year = {1969},
     volume = {13},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1969_13_1_a6/}
}