1. Acne vulgaris: Its aetiology and treatment;Cunliffe;Clin Exp Dermatol,1981
2. Post-adolescent acne in women;Kligman;Cutis,1992
3. Acne and rosacea;Plewig,1993
4. Historical perspectives of tretinoin;Stüttgen;J Am Acad Dermatol,1986
5. Kinetics of epidermis and adnexa following vitamin A acid in the human;Plewig;Acta Derm Venereol,1975