1. Comprehensive review of ultraviolet radiation and the current status on sunscreens;Dale Wilson;Clin,2012
2. Osterwalder protection factors worldwide confusion;Herzog;Brit J Dermatol,2009
3. UV doses worldwide;Godar DE;Photochem Photobiol,2005
4. Effect of the sun on visible clinical signs of aging in Caucasian skin;Flament;Clin,2013
5. Mechanisms of photoaging and chronological skin;Fisher;aging Arch Dermatol,2002