@article{DMGT_2021_41_2_a3,
     author = {Campero-Alonzo, Jos\'e Manuel and S\'anchez-L\'opez, Roc{\'\i}o},
     title = {H-Kernels in {Unions} of {H-Colored} {Quasi-Transitive} {Digraphs}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {391--408},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2021_41_2_a3/}
}