Tadao Takaoka. Partial Solution and Entropy. In Rastislav Královic, Damian Niwinski, editors, Mathematical Foundations of Computer Science 2009, 34th International Symposium, MFCS 2009, Novy Smokovec, High Tatras, Slovakia, August 24-28, 2009. Proceedings. Volume 5734 of Lecture Notes in Computer Science, pages 700-711, Springer, 2009. [doi]