1. Left-to-right shunt detection by an intravascular electrode with hydrogen as an indicator;Clark;Science,1959
2. Localization of right to left shunts with an intravascular polarographic anode sensitive to ascorbic acid;Kaplan;Amer J Cardiol,1961
3. The use of ascorbate dilution curves in cardiovascular diagnosis. Applications of a technic for direct intravascular detection of indicator;Frommer;Circulation,1961
4. New method for estimation of aortic regurgitation;Schlant;Circulation,1962
5. Detection of the small intracardiac shunt with the hydrogen electrode. A highly sensitive and simple technique;Vogel;Amer Heart J,1962