Sigdell, J E A critical review of the theory of the mercury strain-gauge plethysmograph. [electronic resource] - Medical & biological engineering Jul 1969 - 365-71 p. digital Publication Type: Journal Article ISSN: 0025-696X Standard No.: 10.1007/BF02551692 doi Subjects--Topical Terms: Extremities--blood supplyHumansMathematicsMuscles--blood supplyPlethysmographyRegional Blood FlowSkin--blood supply