Graphs with small or large Roman {3}-domination numberNafiseh Ebrahimi, Hossein Abdollahzadeh Ahangar, Mustapha Chellali and Seyed Mahmoud SheikholeslamiRAIRO-Oper. Res., 57 3 (2023) 1195-1208DOI: https://doi.org/10.1051/ro/2023058
