The Guide To Getting It On | by Paul Joannides
http://books.google.com.au/books?id=A2BpPgAACAAJ
Design Article
http://www.ijdesign.org/ojs/index.php/IJDesign/article/view/71
Video Link
http://www.ted.com/talks/lang/eng/mary_roach_10_things_you_didn_t_know_about_orgasm.html