Nils Erik Flick, Manfred Kudlek. A Hierarchy of Languages with Catenation and Shuffle. In Louchka Popova-Zeugmann, editor, Proceedings of the 21th International Workshop on Concurrency, Specification and Programming, Berlin, Germany, September 26-28, 2012. Volume 928 of CEUR Workshop Proceedings, pages 103-114, CEUR-WS.org, 2012. [doi]
Abstract is missing.