Masami Ito, Kayoko Shikishima-Tsuji. Shortest directing words of nondeterministic directable automata. Discrete Mathematics, 308(21):4900-4905, 2008. [doi]
@article{ItoS08,
title = {Shortest directing words of nondeterministic directable automata},
author = {Masami Ito and Kayoko Shikishima-Tsuji},
year = {2008},
doi = {10.1016/j.disc.2007.09.010},
url = {http://dx.doi.org/10.1016/j.disc.2007.09.010},
researchr = {https://researchr.org/publication/ItoS08},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {308},
number = {21},
pages = {4900-4905},
}