Chiswell, Ian. A course in formal languages, automata and groups [electronic resource] / by Ian Chiswell. - London : Springer-Verlag London, 2009. - 157 p. : ill., digital ; 24 cm. - Universitext . ISBN: 9781848009400 (electronic bk.) 9781848009394 (paper) Subjects--Topical Terms: Formal languages.Machine theory.Group theory.Mathematics. Dewey Class. No.: 511.3