1 https://de.wikipedia.org/wiki/Orgasmus
2 Vance E.: Written descriptions of orgasm: a study of sex differences, Archives of Sexual Behaviour, 1976
3 http://psychologytomorrowmagazine.com/women-orgasm-sexuality/
4 Whipple, B.: Physiological correlates of imagery-induced orgasm in women, Archives of Sexual Behaviour, 1992
5 Komisaruk, B.: Functional MRI of the brain during orgasm in women, Annual review of sex research, 2005
6 Meston, L.: Women's orgasm, Annual review of sex research, 2004
7 Lundberg, P.: The peripheral innervation of the genital organs in women, The Scandinavian journal of sexology, 2001
8 Gräfenberg, E: The role of urethra in female orgasm, International journal of sexology, 1953
9 Helgason, A.: Sexual desire, erection, orgasm and ejaculatory functions and their importance to elderly Swedish men:
   a population-based study, Age and ageing, 1996 10 http://archive.wired.com/medtech/health/news/2007/01/72325