hal-00794199 title_s A non-linear problem involving a critical Sobolev exponent. auteur Soohyun Bae, Rejeb Hadiji, Francois Vigneron, Habib Yazidi journal Journal of Mathematical Analysis and Applications volume 396 numero 1 pages 98-107 fichier_hal https://hal.science/hal-00794199/document annee 2012