%0 Journal Article %A Ambrosetti, Antonio %A Malchiodi, Andrea %A Ni, Wei-Ming %T Solutions, concentrating on spheres, to symmetric singularly perturbed problems %J Comptes Rendus. Mathématique %D 2002 %P 145-150 %V 335 %N 2 %I Elsevier %U http://www.numdam.org/articles/10.1016/S1631-073X(02)02414-7/ %R 10.1016/S1631-073X(02)02414-7 %G en %F CRMATH_2002__335_2_145_0