1. The first anesthesia records (Codman, Cushing);Beecher;Surg. Gyn. Obs.,1940
2. Continuous real time computation and display of systolic time intervals from surgical patients;Divers;Comp. Biomed. Res.,1977
3. Introduction to Anesthesia, The Principles of Safe Practice;Dripps,1972
4. Principles of Applied Biomedical Instrumentation;Geddes,1975
5. Systolic time intervals: On-line computation in the surgical patient;Katona,1973