Computation, Physics and Beyond International Workshop on Theoretical Computer Science, WTCS 2012, Dedicated to Cristian S. Calude on the Occasion of His 60th Birthday, Auckland, New Zealand, February 21-24, 2012, Revised Selected and Invited Papers - Dinneen, Michael J.; Khoussainov, Bakhadyr; Nies, André (Springer Berlin Heidelberg : Imprint: Springer, 2012)