Xia Chen Zhi-Ping Fan Li-Hong Ma A Methodof Ranking in Group Decision Making Based on Ordinal Preference Information. 37-41 2007 FSKD (1) http://dx.doi.org/10.1109/FSKD.2007.59 conf/fskd/2007-1 db/conf/fskd/fskd2007-1.html#ChenFM07