TAHRI K. Multiplicity results for nonhomogenous elliptic equation involving the generalized Paneitz-Branson operator. Stud. Univ. Babeş-Bolyai Math. [Internet]. 2023 Dec. 11 [cited 2025 Mar. 13];68(4):931-4. Available from: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/6748