Extraction of gastric electrical response activity from magnetogastrographic recordings by DCA - Estombelo-Montesco, C. A; Araújo, Dráulio Barros de; Roque, Antônio Carlos; Moraes, Eder Rezende; Barros, A. K.; Wakai, R. T.; Baffa, Oswaldo (Lecture Notes in Computer Science, 2007)