%0 Journal Article %A Atapour, Maryam %A Dehgardi, Nasrin %A Volkmann, L. %T An introduction to the twin signed total $k$-domination numbers in directed graphs %J RAIRO - Operations Research - Recherche Opérationnelle %D 2017 %P 1331-1343 %V 51 %N 4 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/ro/2017036/ %R 10.1051/ro/2017036 %G en %F RO_2017__51_4_1331_0