Hing Leung. Separating Exponentially Ambiguous Finite Automata from Polynomially Ambiguous Finite Automata. SIAM Journal on Computing, 27(4):1073-1082, 1998. [doi]
@article{Leung98:1,
title = {Separating Exponentially Ambiguous Finite Automata from Polynomially Ambiguous Finite Automata},
author = {Hing Leung},
year = {1998},
url = {http://epubs.siam.org/sam-bin/dbq/article/25209},
researchr = {https://researchr.org/publication/Leung98%3A1},
cites = {0},
citedby = {0},
journal = {SIAM Journal on Computing},
volume = {27},
number = {4},
pages = {1073-1082},
}