@inproceedings{DLT-1993-Marcus,
	author        = "Solomon Marcus",
	booktitle     = "{Proceedings of the First International Conference on Developments in Language Theory}",
	isbn          = "981-02-1645-9",
	pages         = "453--460",
	publisher     = "{World Scientific}",
	title         = "{Hidden Grammars}",
	year          = 1993,
}