1. The Site of Origin of the Mammalian Heartbeat; the Pacemaker in the Dog;Lewis;Heart,1910
2. The Form and Nature of the Muscular Connections Between the Primary Divisions of the Vertebrate Heart;Keith;J. Anat. & Physiol.,1907
3. Recherches sur la différenciation du tissu nodal et connecteur du coeur des Mammifères;Sanabria;Arch. de biol., Paris,1936
4. Sur le point d'origine de la systole cardiaque dans l'oreillette droite;Wybauw;Arch. Internat. de physiol.,1910
5. Galvanometric Curves Yielded by Cardiac Beats Generated in Various Areas of the Auricular Musculature;Lewis;The Pacemaker of the Heart, Heart,1910