@inproceedings{CIAA-2017-Ryzhikov,
	author        = "Andrew Ryzhikov",
	booktitle     = "{Proceedings of the 22nd International Conference on Implementation and Application of Automata}",
	doi           = "10.1007/978-3-319-60134-2_16",
	isbn          = "['978-3-319-60133-5', '978-3-319-60134-2']",
	pages         = "188--200",
	publisher     = "{Springer}",
	title         = "{Synchronization Problems in Automata Without Non-trivial Cycles}",
	year          = 2017,
}