1. Byers, N. (1974). Unpublished master's thesis, University of Nevada, Las Vegas.
2. Dengrove, E. (1971). The mechanotherapy of sexual disorders.J. Sex. Res. 7: 1?12.
3. Geer, J. H. (1980). Measurement of genital arousal in human males and females. In Martin and Venables (eds.),Techniques in Psychophysiology John Wiley & Sons, New York.
4. Graber, B., and Kline-Graber, G. (1979). Female orgasm: Role of the pubococcygeous muscle.J. Clin. Psychiat. 40.
5. Hatch, J. P. (1979). Vaginal photoplethysmography: Methodological considerations.Arch. Sex. Behav. 8: 357?374.