1. Effects of innervation and drugs upon direct membrane potentials of embryonic chick myocardium;Fingl;J. Pharmacol. Exptl. Therap.,1952
2. The U wave of the electrocardiogram;Lepeschkin;A. M. A. Arch. Internal Med.,1955
3. 5. Furbetta, D. , A. Bufalari & P. Santucci . 1955. La Parte Finale del Ventricologramma (Onda “U” e Tratto “TU”) e la Sindrome dei Muscoli Papillari. Universo.Rome, Italy.