Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1975__216_162722, author = {Gordon Wassermann}, title = {Stability of {Caustics.}}, journal = {Mathematische Annalen}, pages = {43--50}, publisher = {mathdoc}, volume = {216}, year = {1975}, zbl = {0293.58008}, url = {http://geodesic.mathdoc.fr/item/MAN_1975__216_162722/} }
Gordon Wassermann. Stability of Caustics.. Mathematische Annalen, Tome 216 (1975), pp. 43-50. http://geodesic.mathdoc.fr/item/MAN_1975__216_162722/