@inproceedings{DLT-2014-Sorokin,
	author        = "Alexey Sorokin",
	booktitle     = "{Proceedings of the 18th International Conference on Developments in Language Theory}",
	doi           = "10.1007/978-3-319-09698-8_14",
	isbn          = "978-3-319-09697-1",
	pages         = "154--165",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Pumping Lemma and Ogden Lemma for Displacement Context-Free Grammars}",
	volume        = 8633,
	year          = 2014,
}