Pfalzner, P M A revised equation relating tissue--air ratio to per cent depth-dose. [electronic resource] - Physics in medicine and biology May 1981 - 510-3 p. digital Publication Type: Journal Article ISSN: 0031-9155 Standard No.: 10.1088/0031-9155/26/3/014 doi Subjects--Topical Terms: Elementary ParticlesRadiation Dosage