@article{DMGT_2023_43_4_a2,
     author = {Andres, Stephan Dominique},
     title = {Strong and weak {Perfect} {Digraph} {Theorems} for perfect, $\alpha$-perfect and strictly perfect digraphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {909--930},
     publisher = {mathdoc},
     volume = {43},
     number = {4},
     year = {2023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2023_43_4_a2/}
}