Automata, languages and programming [Electronic resource] : 38th international colloquium, ICALP 2011, Zurich, Switzerland, July 4-8, 2011: proceedings: part 2 / ed. L. Aceto [et al.]. - Electronic text data. - Berlin ; Heidelberg : Springer, 2011. - (Lecture notes in computer science, ISSN 0302-9743 ; 6756). - ISBN 978-3-642-22012-8 : Б. ц.