@article{ASUO_2003_XI_1_a25, author = {D. Teodorescu }, title = { A semilinear perturbation of the identity in {Hilbert } spaces}, journal = {Analele Universit\u{a}\c{t}ii "Ovidius" Constan\c{t}a Seria Matematic\u{a}}, publisher = {mathdoc}, volume = {XI}, number = {1}, year = {2003}, url = {http://geodesic.mathdoc.fr/item/ASUO_2003_XI_1_a25/} }