Yufei Huang, Bolian Liu. The index of maximum ambiguous density for irreducible non-powerful sign pattern matrices. Eur. J. Comb., 31(1):230-240, 2010. [doi]
@article{HuangL10-11,
title = {The index of maximum ambiguous density for irreducible non-powerful sign pattern matrices},
author = {Yufei Huang and Bolian Liu},
year = {2010},
doi = {10.1016/j.ejc.2009.03.039},
url = {http://dx.doi.org/10.1016/j.ejc.2009.03.039},
researchr = {https://researchr.org/publication/HuangL10-11},
cites = {0},
citedby = {0},
journal = {Eur. J. Comb.},
volume = {31},
number = {1},
pages = {230-240},
}