Fetal source extraction from magnetocardiographic recordings by dependent component analysis - Araújo, Dráulio Barros de; Barros, Allan Kardec; Estombelo-Montesco, Carlos; Zhao, Hui; Silva, Antônio Carlos Roque da; Baffa, Oswaldo; Wakai, Ronald; Ohnishi, Noboru (Physics in Medicine and Biology, 2005)