Zhen Huang Yongji Wang Design of a PSO Based Fuzzy Logic Controller for Vessel Mooring Shifting System. 306-310 2008 FSKD (3) http://dx.doi.org/10.1109/FSKD.2008.219 conf/fskd/2008-3 db/conf/fskd/fskd2008-3.html#HuangW08a