@article{MASLO_1978__28_2_a9,
     author = {Bos\'ak, Juraj},
     title = {Directed graphs and matrix equations},
     journal = {Mathematica slovaca},
     pages = {189--202},
     publisher = {mathdoc},
     volume = {28},
     number = {2},
     year = {1978},
     mrnumber = {526858},
     zbl = {0378.05034},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1978__28_2_a9/}
}