@inproceedings{DLT-2006-Maletti,
	author        = "Andreas Maletti",
	booktitle     = "{Proceedings of the 10th International Conference on Developments in Language Theory}",
	doi           = "10.1007/11779148_20",
	isbn          = "3-540-35428-X",
	pages         = "215--225",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Hierarchies of Tree Series Transformations Revisited}",
	volume        = 4036,
	year          = 2006,
}