Yechezkel Zalcstein
Syntactic Semigroups of Some Classes of Star-Free Languages
ICALP, 1972.
@inproceedings{ICALP-1972-Zalcstein, author = "Yechezkel Zalcstein", booktitle = "{Proceedings of the Colloquium on Automata, Languages and Programming}", isbn = "0-7204-2074-1", pages = "135--144", title = "{Syntactic Semigroups of Some Classes of Star-Free Languages}", year = 1972, }