Tsutomu Sasao, Yuta Urano, Yukihiro Iguchi. A Lower Bound on the Number of Variables to Represent Incompletely Specified Index Generation Functions. In IEEE 44th International Symposium on Multiple-Valued Logic, ISMVL 2014, Bremen, Germany, May 19-21, 2014. pages 7-12, IEEE, 2014. [doi]
Abstract is missing.