%0 Journal Article
%A Miroslav D. Ašić
%A Vera V. Kovačević-Vujčić
%T NP-Hard Problems and Test Problems  For Global Concave Minimization Methods
%J Yugoslav journal of operations research
%D 1991
%P 45 
%V 1
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/YJOR_1991_1_1_a3/
%G en
%F YJOR_1991_1_1_a3