1. Pathak MA (1997) Photoprotection against harmful effects of solar UVB and UVA radiation: an update. In: Lowe NJ, Shaath NA, Pathak MA (eds) Sunscreens: development, evaluation, and regulatory aspects. Marcel Dekker, New York, pp 59-79
2. Epstein JH (1997) Biological effects of sunlight. In: Lowe NJ, Shaath NA, Pathak MA (eds) Sunscreens: development, evaluation, and regulatory aspects. Marcel Dekker, New York, pp 83-100
3. Holick MF, MacLaughlin JA, Parrish JA, Andersen RR (1982) The photochemistry and photobiology of vitamin D3. In: Regan JD Parrish JA (eds) The science of photomedi-cine. Plenum New York pp 195-218
4. Kligman LH, Sayre RM (1991) An action spectrum for ultraviolet induced elastosis in hairless mice: quantification of elastosis by image analysis. Photochem Photobiol 53:237-242
5. Diffey BL, Stokes RP, Forestier S, Mazilier C, Rougier A (1997) Suncare product photo-stability: a key parameter for a more realistic in vitro efficacy evaluation. Eur J Derma-tol 7:226-228