1. Misura del Fattore di Protezione Solare;Bonfigli,2007
2. Beyond UV radiation: A skin under challenge
3. Australian Cancer Councilhttp://www.cancer.org.au/preventing-cancer/sun-protection/
4. Commission Recommendation of 22 September 2006 on the efficacy of sunscreen products and the claims made relating thereto;Off. J. Eur. Union,2006
5. World Health Organisationhttp://www.who.int/uv/sun_protection/en/