Renren Liu Some Results on the Decision and Construction for Sheffer Functions in Partial K-Valued Logic. [Citation Graph (0, 0)][DBLP] ISMVL, 1993, pp:111-116 [Conf]

Renren Liu Some Results on the Decision for Sheffer Functions in Partial K-Valued Logic(II). [Citation Graph (0, 0)][DBLP] ISMVL, 1998, pp:77-0 [Conf]

Renren Liu Research on the Similarity among Precomplete Sets Preserving m-ary Relations in Partial K-Valued Logic. [Citation Graph (0, 0)][DBLP] ISMVL, 1999, pp:136-139 [Conf]