%0 Journal Article %A D. A. Eibozhenko %T $k$-Clustering optimization algorithmfor Steiner problem in directed graphs %J Vestnik Sankt-Peterburgskogo universiteta. Prikladnaâ matematika, informatika, processy upravleniâ %D 2011 %P 29-39 %N 2 %U http://geodesic.mathdoc.fr/item/VSPUI_2011_2_a3/ %G ru %F VSPUI_2011_2_a3