Coello, Roberto Carlos Alvarez, and Diego Patricio Serrano Piedra. “Electrocardiographic Comparison Between Artificial Cardiac Stimulation of Apex, Septum and Right Ventricular Outflow Tract”. JOURNAL OF CARDIAC ARRHYTHMIAS, vol. 32, no. 3, Jan. 2020, pp. 174-7, https://jca.org.br/jca/article/view/3300.