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@article{NUMA_1964__6_131600, author = {B.R. HEAP and M.S. LYNN}, title = {The {Index} of {Primitivity} of a {Non-Negative} {Matrix.}}, journal = {Numerische Mathematik}, pages = {120--141}, publisher = {mathdoc}, volume = {6}, year = {1964}, zbl = {0121.26303}, url = {http://geodesic.mathdoc.fr/item/NUMA_1964__6_131600/} }
B.R. HEAP; M.S. LYNN. The Index of Primitivity of a Non-Negative Matrix.. Numerische Mathematik, Tome 6 (1964), pp. 120-141. http://geodesic.mathdoc.fr/item/NUMA_1964__6_131600/