1. 13-cis-retinoic acid in acne;Jones,1981
2. Oral retinoids: Effects on human sebaceous glands and nodulocystic acne;Strauss,1981
3. Isotretinoin versus placebo in the treatment of cystic acne;Peck;J Am Acad Dermatol,1982
4. 13-cis Retinsäure zur oralen Behandlung der Acne conglobata;Plewig;Hautarzt,1981
5. 13-cis-retinoic acid. Pharmacological and toxicological findings in treatment of severe forms of acne;Wagner;Munch Med Wochenschr,1980