@inproceedings{DLT-1997-MateescuM,
	author        = "Alexandru Mateescu and George Daniel Mateescu",
	booktitle     = "{Proceedings of the Third International Conference on Developments in Language Theory}",
	pages         = "489--505",
	publisher     = "{Aristotle University of Thessaloniki}",
	title         = "{Infinite trajectories}",
	year          = 1997,
}