Zhi-Hong Yi Feng Qin Wei-Cai Li Generalizations to the constructions of t-norms: Rotation(-annihilation) construction. 1619-1630 2008 159 Fuzzy Sets and Systems 13 http://dx.doi.org/10.1016/j.fss.2007.12.015 db/journals/fss/fss159.html#YiQL08