@article{DMGT_2013_33_1_a11,
     author = {Henning, Michael A. and Rall, Douglas F.},
     title = {On {Graphs} with {Disjoint} {Dominating} and {2-Dominating} {Sets}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {139--146},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2013_33_1_a11/}
}