1. A Statistical Study of the Ventricular Gradient and of the QRS Complex of the Electrocardiogram;Ashman;Arch. Inst. Cardiol. de Mexico,1945
2. The QRS Complex of the Electrocardiogram;Gardberg;Arch. Int. Med,1943
3. The Electrocardiogram and X-Ray Configuration of the Heart;Master,1942
4. Estimation of Heart Position From the QRS Complex;Ashman;Arch. Inst. Cardiol. de Mexico,1946
5. Electrocardiographic Changes in Acute Glomerulonephritis;La Due;Am. Heart J,1946