Noboru Takagi. Some Properties of Logic Functions over Multi-interval Truth Values. In Van-Nam Huynh, Yoshiteru Nakamori, Hiroakira Ono, Jonathan Lawry, Vladik Kreinovich, Hung T. Nguyen, editors, Interval / Probabilistic Uncertainty and Non-Classical Logics. Volume 46 of Advances in Soft Computing, pages 256-267, Springer, 2008. [doi]
Abstract is missing.