@article{MAN_1975__215_162712,
     author = {Marc de Wilde and Le Quang Chu},
     title = {Perturbation of {Maps} in {Locally} {Convex} {Spaces.}},
     journal = {Mathematische Annalen},
     pages = {215--234},
     publisher = {mathdoc},
     volume = {215},
     year = {1975},
     zbl = {0288.47018},
     url = {http://geodesic.mathdoc.fr/item/MAN_1975__215_162712/}
}