Oscar Castillo Alma Isabel Martinez Alma Cristina Martinez Evolutionary Computing for Topology Optimization of Type-2 Fuzzy Systems. 63-75 2007 Analysis and Design of Intelligent Systems using Soft Computing Techniques http://dx.doi.org/10.1007/978-3-540-72432-2_8 series/asc/2007-41 db/series/asc/asc41.html#CastilloMM07