%0 Journal Article
%A Rubio, G.
%A Jódar, L.
%T Approximate solutions and error bounds for second order operator differential equations
%J Portugaliae mathematica
%D 1991
%P 165-177
%V 48
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PORMA_1991__48_2_115748/
%G en
%F PORMA_1991__48_2_115748