@article{10_21136_CMJ_2019_0212_18,
     author = {Chen, Xue-Gang},
     title = {A note on the double {Roman} domination number of graphs},
     journal = {Czechoslovak Mathematical Journal},
     pages = {205--212},
     publisher = {mathdoc},
     volume = {70},
     number = {1},
     year = {2020},
     doi = {10.21136/CMJ.2019.0212-18},
     mrnumber = {4078354},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2019.0212-18/}
}