Signed total Roman k-domination in graphs
J. Combin. Math. Combin. Comput. 105 (2018), 105--116.
BibTex references
@Article\{Vol18b,
author = "Volkmann, Lutz",
title = "Signed total Roman k-domination in graphs",
journal = "J. Combin. Math. Combin. Comput.",
volume = "105",
pages = "105--116",
year = "2018",
}