%0 Journal Article %A Marcu Dănut %T Note on the spanning trees of a connected digraph %J Novi Sad Journal of Mathematics %D 1981 %P 297-303 %V 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/NSJOM_1981_11_Nonea_28/ %F NSJOM_1981_11_Nonea_28