@article{GDZPPN00234128X, title = {On non linear perturbations of isometries.}, journal = {Mathematische Annalen}, volume = {302}, year = {1995}, pages = {617-628}, zbl = {0836.46014}, url = {http://dml.mathdoc.fr/item/GDZPPN00234128X} }
Omladic, Matjaz; Semrl, Peter. On non linear perturbations of isometries.. Mathematische Annalen, Tome 302 (1995) pp. 617-628. http://gdmltest.u-ga.fr/item/GDZPPN00234128X/