1. Coninx, F. (1978). The detection of combined differences in frequency and intensity. Acustica 39: 137–150.
2. Houtgast, T., and Steeneken, H.J.M. (1985). A review of the MTF concept in room acoustics and its use for estimating speech intelligibility in auditoria. J. Acoust. Soc. Am. 77: 1069–1077.
3. Müller, C. (1981). Survey of cochlear implant work, 102nd Meeting of the Acoustical Society of America.
4. Rodenburg, M. (1972). Sensitivity of the auditory system to differences in intensity. Dissertation, Erasmus University, Rotterdam, The Netherlands.
5. Shannon, R.V. (1983). Multichannel electrical stimulation of the auditory nerve in man. I. Basic psychophysics. Hearing Res. 11: 157–189.