%0 Journal Article %T Estimates for lower order eigenvalues of a clamped plate problem %A Qing-Ming Cheng %A Guangyue Huang %A Guoxin Wei %J Mathematics %D 2009 %I arXiv %X For a bounded domain $\Omega$ in a complete Riemannian manifold $M^n$, we study estimates for lower order eigenvalues of a clamped plate problem. We obtain universal inequalities for lower order eigenvalues. We would like to remark that our results are sharp. %U http://arxiv.org/abs/0906.5192v1