Lutz Volkmann. The Roman {2}-domatic number of graphs. Discrete Applied Mathematics, 258:235-241, 2019. [doi]
@article{Volkmann19-0, title = {The Roman {2}-domatic number of graphs}, author = {Lutz Volkmann}, year = {2019}, doi = {10.1016/j.dam.2018.11.027}, url = {https://doi.org/10.1016/j.dam.2018.11.027}, researchr = {https://researchr.org/publication/Volkmann19-0}, cites = {0}, citedby = {0}, journal = {Discrete Applied Mathematics}, volume = {258}, pages = {235-241}, }