%0 Journal Article %A Bogdana Stanojević %A Milan Stanojević %T Penalty Method for Fuzzy Linear Programming With Trapezoidal Numbers %J Yugoslav journal of operations research %D 2009 %P 149 %V 19 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/YJOR_2009_19_1_a10/ %G en %F YJOR_2009_19_1_a10