%0 Journal Article
%A Liu, Yansheng
%T Multiple positive solutions to fourth-order singular boundary-value problems in abstract spaces
%J Electronic Journal of Differential Equations
%D 2004
%V 2004
%I mathdoc
%U http://geodesic.mathdoc.fr/item/EJDE_2004__2004__a99/
%G en
%F EJDE_2004__2004__a99