%0 Journal Article
%A Hadžić 

 Olga
%T A theorem on best 

 approximations and applications
%J Novi Sad Journal of Mathematics
%D 1992
%P 47-55
%V 22
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NSJOM_1992_22_2a_4/
%F NSJOM_1992_22_2a_4