Extremal digraphs for an upper bound on the double Roman domination number
Bull. Malays. Math. Sci. Soc. 43 (2020), 1153--1162.
BibTex references
@Article\{OBBV20,
author = "Ouldrabah, Lyes and Blidia, Mostafa and Bouchou, A. and Volkmann, Lutz",
title = "Extremal digraphs for an upper bound on the double Roman domination number",
journal = "Bull. Malays. Math. Sci. Soc.",
volume = "43",
pages = "1153--1162",
year = "2020",
}