Circulation Research 1 January 1976. Atrial rhythm during ventricular fibrillation in the dog. https://www.ahajournals.org/doi/abs/10.1161/01.RES.38.1.41#:~:text=PDF/EPUB-,Abstract,antegrade%20direction%20during%20atrial%20fibrillation.
Ventricular rhythms
