Application of adaptive signal processing for determining the limits of P and T waves in an ECG. - Emilio Soria-Olivas; Marcelino Martínez-Sober; Javier Calpe-Maravilla; Juan-Francisco Guerrero-Martínez; Javier Chorro-Gascó; José Espí-López (IEEE Trans. Biomed. Eng., 1998)