1. A method for recording the first derivative of the conventional ECG potentials through the use of electronic analog computers (experimental results and theoretical analysis);Angelakos;Harvard Medical School Thesis,1959
2. Recordings of the first derivative of the human ECG through the use of electronic analog computers;Angelakos,1959
3. The electrocardiographic spatial magnitude curve in man;Sayers;Am. Heart J.,1955
4. Linear time scale for spatial vectocardiographic data;Abildskov;Circulation,1956
5. Intracardiac and intravascular potentials resulting from electrical activity of the normal human heart;Kossman;Circulation,1950