@inproceedings{CIAA-2002-Polak,
	author        = "Libor Polák",
	booktitle     = "{Revised Papers of the Seventh International Conference on Implementation and Application of Automata}",
	doi           = "10.1007/3-540-44977-9_17",
	isbn          = "3-540-40391-4",
	pages         = "182--193",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Syntactic Semiring and Language Equations}",
	volume        = 2608,
	year          = 2002,
}