Mikolaj Bojanczyk. Algebra for Tree Languages. In Erich Grädel, Reinhard Kahle, editors, Computer Science Logic, 23rd international Workshop, CSL 2009, 18th Annual Conference of the EACSL, Coimbra, Portugal, September 7-11, 2009. Proceedings. Volume 5771 of Lecture Notes in Computer Science, pages 1, Springer, 2009. [doi]
Abstract is missing.