@inproceedings{DLT-2015-AlmeidaBKK,
	author        = "Jorge Almeida and Jana Bartonová and Ondrej Klíma and Michal Kunc",
	booktitle     = "{Proceedings of the 19th International Conference on Developments in Language Theory}",
	doi           = "10.1007/978-3-319-21500-6_4",
	isbn          = "978-3-319-21499-3",
	pages         = "58--70",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{On Decidability of Intermediate Levels of Concatenation Hierarchies}",
	volume        = 9168,
	year          = 2015,
}