Monitoring Atrial Fibrillation using PPG Signals and a Smartphone. - Alejandro Estrella-Gallego; Mabel Vázquez-Briseño; Juan Ivan Nieto-Hipólito; Everardo Gutiérrez López; Juan-de-Dios Sánchez-López; Armando García-Berumen; Raúl Rivera-Rodríguez (Int. J. Online Biomed. Eng., 2020)