@article{DMGT_2013_33_2_a7,
     author = {Chellali, Mustapha and Rad, Nader Jafari},
     title = {Strong {Equality} {Between} the {Roman} {Domination} and {Independent} {Roman} {Domination} {Numbers} in {Trees}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {337--346},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2013_33_2_a7/}
}