%0 Generic %D 2010 %T Other Topics %A Gheorghe Paun %A Grzegorz Rozenberg %E Gheorghe Paun %E Grzegorz Rozenberg %E Arto Salomaa %C Oxford (U.K.) %I Oxford University Press %P 654-663 %U http://www.oup.com.au/titles/academic/maths/9780199556670 %@ 9780199556670