1. Determinants of duration and mean rate of ventricular ejection;Braunwald, E.; Sarnoff, S.J.; Stainsby, W.N.;Circulation Research,1958
2. Verification of systolic time intervals and true isovolumic contraction time from the apex cardiogram by micromanometer catheterization of the left ventricle and aorta;Bush, C.A.; Lewis, R.P.; Leighton, R.F.; Fontana, M.E.; Weissler, A.M.;Circulation,1970
3. The apex cardiogram: its normal features explained by those found in heart disease;Coulshed, N.; Epstein, E.J.;British Heart Journal,1963
4. Elementary Statistics;Croxton, F.E.,1959
5. (I968a). Left ventricular ejection period. Measurement by atraumatic techniques: results in normal young men and comparison of methods of calculation;Spodick, D.H.; Kumar, S.;American Heart Journal