@article{DMGT_2022_42_3_a4,
     author = {Sun, Yuefang and Jin, Zemin},
     title = {Minimally {Strong} {Subgraph} (k, {\ensuremath{\ell})-Arc-Connected} {Digraphs}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {759--770},
     publisher = {mathdoc},
     volume = {42},
     number = {3},
     year = {2022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2022_42_3_a4/}
}