Xingwen Liu Passivity and Passification of T-S Fuzzy-Model-Based Switched Uncertain Systems. 30-34 2007 FSKD (2) http://dx.doi.org/10.1109/FSKD.2007.446 conf/fskd/2007-2 db/conf/fskd/fskd2007-2.html#Liu07c