Oscar Castillo Luis T. Aguilar Nohé R. Cázarez-Castro Selene Cardenas Systematic design of a stable type-2 fuzzy logic controller. 1274-1279 2008 8 Appl. Soft Comput. 3 http://dx.doi.org/10.1016/j.asoc.2007.02.021 db/journals/asc/asc8.html#CastilloACC08