@article{AMI_2012_40_a8,
     author = {Seyed Mahmoud Sheikholeslami and Lutz Volkmann},
     title = {The signed {Roman} domatic number of a graph},
     journal = {Annales mathematicae et informaticae},
     pages = {105--112},
     publisher = {mathdoc},
     volume = {40},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AMI_2012_40_a8/}
}