@article{GDZPPN00231116X, title = {Perturbation of Maps in Locally Convex Spaces.}, journal = {Mathematische Annalen}, volume = {217}, year = {1975}, pages = {215-234}, zbl = {0288.47018}, url = {http://dml.mathdoc.fr/item/GDZPPN00231116X} }
Wilde, Marc de; Chu, Le Quang. Perturbation of Maps in Locally Convex Spaces.. Mathematische Annalen, Tome 217 (1975) pp. 215-234. http://gdmltest.u-ga.fr/item/GDZPPN00231116X/