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2. Quantitative segmental pulse volume recorder: A clinical tool;Darling;Surgery,1972
3. The form of the volume pulse in the finger pad in health, arteriosclerosis, and hypertension;Dillon;Amer. Heart J.,1941
4. Tonometer calibration: An attempt to remove discrepancies found in the 1954 calibration scale for Schiøtz tonometers;Friedenwald;Trans. amer. Acad. Ophthal. Otolaryng.,1957
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