A. Milston

Low-frequency variability in the blood volume and in the blood volume pulse measured by photoplethysmography.

M. Nitzan, A. Babchenko, Y. Mahler, 1996, Journal of biomedical optics.

Measurement of the variability of the skin blood volume using dynamic spectroscopy

M. Nitzan, A. Babchenko, B. Khanokh, 1996 .