Cano, M.E., Jaso, R.A., Tavares, M.E., Estrada, J.C., Mena, E.A., Reynoso, O., González Vega, A. and Córdova Fraga, T. 2018. A simple alternative for modulating and recording the PQRST complex. Revista Mexicana de Ingenieria Biomedica. 32, 2 (Feb. 2018), 9.