@article{DMGT_2021_41_1_a16,
     author = {Mart{\'\i}nez, Abel Cabrera and Kuziak, Dorota and Yero, Ismael G.},
     title = {A {Constructive} {Characterization} of {Vertex} {Cover} {Roman} {Trees}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {267--283},
     publisher = {mathdoc},
     volume = {41},
     number = {1},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2021_41_1_a16/}
}