Jan van Leeuwen Osamu Watanabe Masami Hagiya Peter D. Mosses Takayasu Ito Theoretical Computer Science, Exploring New Frontiers of Theoretical Informatics, International Conference IFIP TCS 2000, Sendai, Japan, August 17-19, 2000, Proceedings IFIP TCS Lecture Notes in Computer Science 1872 Springer 2000 3-540-67823-9 db/conf/ifipTCS/ifipTCS2000.html