%0 Journal Article %A Sudoplatov, S.V. %T Powerful digraphs. %J Sibirskij Matematicheskij Zhurnal %D 2007 %P 205 %V 48 %N 1 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/SMZ_2007__48_1_55570/ %G en %F SMZ_2007__48_1_55570