%0 Journal Article %A Rodoljub Tonić %A Milan Rakić %T Annual Preventive Maintenance Scheduling for Thermal Units in an Electric Power System %J Yugoslav journal of operations research %D 2010 %P 261 %V 20 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/YJOR_2010_20_2_a6/ %G en %F YJOR_2010_20_2_a6