Stability of C ∞ mappings, III. Finitely determined map-germs
Publications Mathématiques de l'IHÉS, Volume 35 (1968), p. 127-156 
@article{PMIHES_1968__35__127_0,
     author = {Mather, John},
     title = {Stability of $C^\infty $ mappings, III. Finitely determined map-germs},
     journal = {Publications Math\'ematiques de l'IH\'ES},
     publisher = {Institut des Hautes \'Etudes Scientifiques},
     volume = {35},
     year = {1968},
     pages = {127-156},
     zbl = {0159.25001},
     mrnumber = {43 \#1215a},
     language = {en},
     url = {http://www.numdam.org/item/PMIHES_1968__35__127_0}
}

Mather, John N. Stability of $C^\infty $ mappings, III. Finitely determined map-germs. Publications Mathématiques de l'IHÉS, Volume 35 (1968) pp. 127-156. http://www.numdam.org/item/PMIHES_1968__35__127_0/

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