TAHRI, K. 2023. Multiplicity results for nonhomogenous elliptic equation involving the generalized Paneitz-Branson operator. Studia Universitatis Babeș-Bolyai Mathematica. 68, 4 (Dec. 2023), 931–941. DOI:https://doi.org/10.24193/subbmath.2023.4.19.