Zurek, P M Measurement of the combination tones f2-f1 and 2f1-f2. [electronic resource] - The Journal of the Acoustical Society of America Jul 1976 - 155-68 p. digital Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S. ISSN: 0001-4966 Standard No.: 10.1121/1.381057 doi Subjects--Topical Terms: HumansMethodsPerceptual DistortionPsychoacoustics