AWAN, Zahid Aslam; GALLAGHER, Muhammad; ROWLAND, E.; CAMM, AJ. Flutter Wave polarity on Sruface ECG and Endocardial activation in Typical counter clockwise atrial flutter. Journal of Postgraduate Medical Institute, [S. l.], v. 18, n. 4, 2011. Disponível em: https://www.jpmi.org.pk/index.php/jpmi/article/view/951. Acesso em: 16 nov. 2025.