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Gulston M, Knowland J (July 1999). "Illumination of human keratinocytes in the presence of the sunscreen ingredient Padimate-O and through an SPF-15 sunscreen reduces direct photodamage to DNA but increases strand breaks". Mutation Research. 444 (1): 49–60. Bibcode:1999MRGTE.444...49G. doi:10.1016/s1383-5718(99)00091-1. PMID10477339.
Gulston M, Knowland J (July 1999). "Illumination of human keratinocytes in the presence of the sunscreen ingredient Padimate-O and through an SPF-15 sunscreen reduces direct photodamage to DNA but increases strand breaks". Mutation Research. 444 (1): 49–60. Bibcode:1999MRGTE.444...49G. doi:10.1016/s1383-5718(99)00091-1. PMID10477339.
Kemmink J, Boelens R, Koning TM, Kaptein R, van der Marel GA, van Boom JH (January 1987). "Conformational changes in the oligonucleotide duplex d(GCGTTGCG) x d(CGCAACGC) induced by formation of a cis–syn thymine dimer. A two-dimensional NMR study". European Journal of Biochemistry. 162 (1): 37–43. doi:10.1111/j.1432-1033.1987.tb10538.x. PMID3028790.
Gulston M, Knowland J (July 1999). "Illumination of human keratinocytes in the presence of the sunscreen ingredient Padimate-O and through an SPF-15 sunscreen reduces direct photodamage to DNA but increases strand breaks". Mutation Research. 444 (1): 49–60. Bibcode:1999MRGTE.444...49G. doi:10.1016/s1383-5718(99)00091-1. PMID10477339.