[1]
O. Lopera R. and G. Martínez A., “Morphology of the QRS complexes in fascicular beats”, Med UPB, vol. 3, no. 1, pp. 56–63, Jun. 1984, Accessed: Jul. 25, 2026. [Online]. Available: https://revistas.upb.edu.co/index.php/medicina/article/view/6367