A. Versprille. Basic mechanisms and clinical consequences of cyclic changes in pulmonary blood flow and blood volume during mechanical ventilation. European Journal of Anaesthesiology 11: 15-23, 1994.
AZriel perel M D, et al: Systolic Blood Pressure Variation is a Sensitive Indicator of Hypovolemia in Ventilated Dogs Subjected to Graded Hemorrhage. Anesthesiology 67: 498-502, 1987.