%0 Journal Article %A Andrey B. Andreev %A Milena R. Racheva %T Variational Aspects of the Mixed Formulation for Fourth-Order Elliptic Eigenvalue Problems %J Mathematica balkanica %D 2004 %P 41 %V 18 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_2004_18_1-2_a3/ %F MABA_2004_18_1-2_a3