@article{MAT_1969_13_2_a3,
     author = {H. Whitney},
     title = {Singularities of mappings of {Euclidean} spaces},
     journal = {Matematika},
     pages = {105--123},
     year = {1969},
     volume = {13},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1969_13_2_a3/}
}