TY - JOUR T1 - Solutions concentrating on spheres to symmetric singularly perturbed problems JF - C.R.Math.Acad.Sci. Paris 335 (2002),no.2,145-150 Y1 - 2002 A1 - Antonio Ambrosetti A1 - Andrea Malchiodi A1 - Wei-Ming Ni AB - We discuss some existence results concerning problems (NLS) and (N), proving the existence of radial solutions concentrating on a sphere. PB - SISSA Library UR - http://hdl.handle.net/1963/1594 U1 - 2524 U2 - Mathematics U3 - Functional Analysis and Applications ER -