%0 Journal Article
%A Liu, W. B.
%A Rubio, J. E.
%T A unified optimality condition for eigenvalue problems
%J Kybernetika
%D 1993
%P 249-255
%V 29
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/KYB_1993__29_3_a4/
%G en
%F KYB_1993__29_3_a4