@inproceedings{DLT-1997-RahonisS,
	author        = "George Rahonis and Kai Salomaa",
	booktitle     = "{Proceedings of the Third International Conference on Developments in Language Theory}",
	pages         = "447--460",
	publisher     = "{Aristotle University of Thessaloniki}",
	title         = "{Hierarchies of synchronized and algebraic forests}",
	year          = 1997,
}