Sergio Ferraro, Giovanni Maddalena, Vicente D'Agosto, Michele D'Alto, Massimo Chiariello, Maurizio Santomauro: Influence of atenolol on the relationship between heart rate and qt interval in patients with exercise-induced myocardial ischemia. Clinical Cardiology, 1992-12, nro 12, s. 911–915. doi:10.1002/clc.4960151211Artikkelin verkkoversio. (englanti)
Sergio Ferraro, Giovanni Maddalena, Vicente D'Agosto, Michele D'Alto, Massimo Chiariello, Maurizio Santomauro: Influence of atenolol on the relationship between heart rate and qt interval in patients with exercise-induced myocardial ischemia. Clinical Cardiology, 1992-12, nro 12, s. 911–915. doi:10.1002/clc.4960151211Artikkelin verkkoversio. (englanti)