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@article{AM2_1978__17_136741, author = {Hans Schneider and D.J. Richman}, title = {On the singular graph and the {Weyr} characteristic of an {M-matrix.}}, journal = {Aequationes mathematicae}, pages = {208--234}, publisher = {mathdoc}, volume = {17}, year = {1978}, zbl = {0379.15009}, url = {http://geodesic.mathdoc.fr/item/AM2_1978__17_136741/} }
Hans Schneider; D.J. Richman. On the singular graph and the Weyr characteristic of an M-matrix.. Aequationes mathematicae, Tome 17 (1978), pp. 208-234. http://geodesic.mathdoc.fr/item/AM2_1978__17_136741/