@article{10_37236_6539,
     author = {Yaokun Wu and Zeying Xu and Yinfeng Zhu},
     title = {Strongly connected multivariate digraphs},
     journal = {The electronic journal of combinatorics},
     year = {2017},
     volume = {24},
     number = {1},
     doi = {10.37236/6539},
     zbl = {1358.05128},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/6539/}
}