%0 Journal Article
%A Sever S. Dragomir
%T Best Approximation in Linear Spaces Endowed with Subinner Product
%J Mathematica balkanica
%D 1991
%P 271
%V 5
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MABA_1991_5_4_a0/
%F MABA_1991_5_4_a0