Differential Equations & Applications · Volume 1, Issue 2 Optimization of the first eigenvalue in problems involving the bi-Laplacian 01-12 Pages 219-235 DOI 10.7153/dea-01-12 Downloads Short PDF Full PDF PNG Authors Fabrizio Cuccu Giovanni Porru Keywords bi-Laplacian eigenvalues minimization maximization rearrangement Subject classes 35P15 47A75