Ambrosetti, Antonio. Perturbation Methods and Semilinear Elliptic Problems on Rn [electronic resource] / by Antonio Ambrosetti, Andrea Malchiodi. - Basel : Birkhauser Verlag, 2006. - ix, 183 p. : ill., digital ; 24 cm. - Progress in Mathematics ; 240 . ISBN: 9783764373962 (electronic bk.) 9783764373214 (paper) Subjects--Topical Terms: Differential equations, Elliptic.Perturbation (Mathematics)Boundary value problems. LC Class. No.: QA377 / .A5665 2006 Dewey Class. No.: 515.3533