%0 Journal Article %A Zelinka, Bohdan %T Signed total domination number of a graph %J Czechoslovak Mathematical Journal %D 2001 %P 225-229 %V 51 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_2001__51_2_a0/ %G en %F CMJ_2001__51_2_a0