Kvalem, I. L., B. Træen, B. Lewin, and A. Štulhofer. “Self-Perceived Effects of Internet Pornography Use, Genital Appearance Satisfaction, and Sexual Self-Esteem Among Young Scandinavian Adults”. Cyberpsychology: Journal of Psychosocial Research on Cyberspace, vol. 8, no. 4, Dec. 2014, p. Article 4, doi:10.5817/CP2014-4-4.