1. Green HD: Circulatory system: physical principles. In: Glasser (ed.), Medical Physics, Year Book Publ, Chicago, 2: 228–251,1950.
2. Spencer MP et al.: Dynamics of the normal aorta: ‘Inertiance’ and ‘Compliance’ of the Arterial System which transforms the cardiac ejection pulse. Circ Res 6: 491, 1958.
3. Spencer MP, Denison AB: An explanation of the major features of the Arterial Pulse by Means of a Simple Analogy. Fed Proc 19 (1): 87, 1960.
4. Hamilton WF, Dow P: An experimental study of standing waves in the pulsed propogated through the aorta. Am J Physiol 125: 48, 1939.
5. Spencer MP: Frequency Spectrum Analysis in Doppler Diagnosis. In: Zwiebel WJ (ed.) Introduction to Vascular Ultrasonography, 2nd Edition. Grune and Stratton, New York, 1985.