@article{BMMS_2013_36_1_a12,
     author = {H. Aram and M. Atapour and S. M. Sheikholeslami and L. Volkmann},
     title = {Signed $k${-Domatic} {Numbers} of {Digraphs}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2013},
     volume = {36},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2013_36_1_a12/}
}