@inproceedings{DLT-1997-Neumann,
	author        = "Andreas Neumann",
	booktitle     = "{Proceedings of the Third International Conference on Developments in Language Theory}",
	pages         = "507--518",
	publisher     = "{Aristotle University of Thessaloniki}",
	title         = "{Unambiguity of SGML Content Models — Pushdown Automata Revisited}",
	year          = 1997,
}