Miroslaw Kutylowski Witold Charatonik Maciej Gebala Fundamentals of Computation Theory, 17th International Symposium, FCT 2009, Wroclaw, Poland, September 2-4, 2009. Proceedings 5699 2009 http://dx.doi.org/10.1007/978-3-642-03409-1 978-3-642-03408-4 FCT Lecture Notes in Computer Science Springer db/conf/fct/fct2009.html