@article{KYB_1979__15_6_a0,
     author = {Sys{\l}o, Maciej M.},
     title = {A characterization of hypergraphs generated by arborescences},
     journal = {Kybernetika},
     pages = {--407},
     publisher = {mathdoc},
     volume = {15},
     number = {6},
     year = {1979},
     mrnumber = {562372},
     zbl = {0423.05031},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1979__15_6_a0/}
}