1. Baker, L. E., Judy, W. V., Geddes, L. E., Langley, F. M. andHill, D. W. (1971) The measurement of cardiac output by means of electrical impedance.Cardiovasc. Res. Cent. Bull. Houston,9, 135–145.
2. Boer, P., Ross, J. C., Geyskes, G. G. andDorhout Mees, E. J. (1979) Measurement of cardiac output by impedance cardiography under various conditions.Am. J. Physiol.,237, H491-H496.
3. Endresen, J. andHill, D. W. (1976) The effect of respiration on the monitoring of stroke volume and cardiac output by the electrical impedance technique.Eur. J. Intensive Care Med.,2, 3–6.
4. Hill, D. W. andMohapatra, S. N. (1977) The current status of electrical impedance techniques for the monitoring of cardiac output and limb blood flow. InHill, D. W. andWatson, B. W. (Ed.)IEEE Medical Electronics Monographs 23–27. Peter Peregrinus Ltd., Stevenage.
5. Hughes, A. andGrawoig, D. (1971)Statistics: a foundation for analysis. Addison-Wesley, London.