@article{DMGT_2020_40_3_a4,
     author = {Bouchou, Ahmed and Blidia, Mostafa and Chellali, Mustapha},
     title = {Extremal {Graphs} for a {Bound} on the {Roman} {Domination} {Number}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {771--785},
     publisher = {mathdoc},
     volume = {40},
     number = {3},
     year = {2020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2020_40_3_a4/}
}