Teaching Electro and Phono Cardiology with Microcomputer. - Walter Celso de Lima; Renato Garcia Ojeda; Carlos Inácio Zanchin; Jorge Muniz Barreto (MIE, 1991)

Application of ICA in the Separation of Breathing Artifacts in ECG Signal. - John Oersted Wisbeck; Allan Kardec Barros; Renato Garcia Ojeda (ICONIP, 1998)