Xu, Guogang; Snellman, Erna; Bykov, Vladimir J.; Jansen, Christer T.; Hemminki, Kari (2000). "Effect of age on the formation and repair of UV photoproducts in human skin in situ". Mutation Research/DNA Repair. 459 (3): 195–202. doi:10.1016/S0921-8777(99)00069-5. PMID10812331.
nih.gov
pubmed.ncbi.nlm.nih.gov
Xu, Guogang; Snellman, Erna; Bykov, Vladimir J.; Jansen, Christer T.; Hemminki, Kari (2000). "Effect of age on the formation and repair of UV photoproducts in human skin in situ". Mutation Research/DNA Repair. 459 (3): 195–202. doi:10.1016/S0921-8777(99)00069-5. PMID10812331.