Electronic Journal of Differential Equations, Vol. 2011 (2011), No. 54, pp. 1-10. Title: Nonhomogeneous elliptic equations with decaying cylindrical potential and critical exponent Authors: Mohammed Bouchekif (Univ. of Tlemcen, Algeria) Mohammed E. O. El Mokhtar (Univ. of Tlemcen, Algeria) Abstract: We prove the existence and multiplicity of solutions for a nonhomogeneous elliptic equation involving decaying cylindrical potential and critical exponent. Submitted February 23, 2011. Published April 27, 2011. Math Subject Classifications: 35J20, 35J70 Key Words: Hardy-Sobolev-Maz'ya inequality; Palais-Smale condition; Nehari manifold; critical exponent.