Ling, G. et al. 2001. Epidermal p53 response and repair of thymine dimers in human skin after a single dose of ultraviolet radiation: effects of photoprotection. Acta Dermato-Venereologica. 81, 2 (Mar. 2001), 81–86. DOI:https://doi.org/10.1080/00015550152384173.