hal-01673000 title_s The effect of a discontinuous weight for a critical Sobolev problem auteur Rejeb Hadiji, Sami Baraket, Habib Yazidi journal Applicable Analysis pages 1 - 10 doi 10.1080/00036811.2017.1376737 annee 2017 Identifiant HAL 822417 1712269 172523