1. A history of electrocardiography;Burch,1990
2. A new system of multiple-lead exercise electrocardiography;Mason;Am Heart J,1966
3. Fundamental differences between the standard 12-lead electrocardiograph and the modified (Mason-Likar) exercise lead system;Papouchado;Am J Emerg Med,1987
4. Atlas of cardiovascular monitoring;Mark,1998
5. Learning electrocardiography;Constant,1987