6Rhodes LE, Friedmann PS. A comparison of the ultraviolet B-induced erythemal response of back and buttock skin. Photodermatol Photoimmunol Photomed, 1992,9: 48-51.?A
7Bilsland D, Diffey BL, Farr PM, et al. Diagnostic phototesting in the United Kingdom. British Photodermatology Group. Br J Dermatol,1992,127: 297-299.
8Mackenzie LA. The analysis of the ultraviolet radiation doses required to produce erythemal responses in normal skin. Br J Dermatol, 1983,108: 1-9.
9Honigsmann H. Erythema and pigmentation. Photodermatol Photoimmunol Photomed, 2002,18:75-81.
10Chardon A, Crétois I, Hourseau C. Skin colour typology and suntanning pathways. Int J Cosm Scien, 1991, 13: 191-208.
