@article{DMGT_2022_42_1_a9,
     author = {Klein, Douglas J. and Rodr{\'\i}guez-Vel\'azquez, Juan A.},
     title = {Protection of {Lexicographic} {Product} {Graphs}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {139--158},
     publisher = {mathdoc},
     volume = {42},
     number = {1},
     year = {2022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2022_42_1_a9/}
}