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2. Serup , J Winther A Blichmann CW. Physiological effects of repeated application of an oil-in-water emulsion evaluated by non-invasive methods Acta Dermato-Venereologica (Stockholm)
3. Skin surface biopsy: an improved technique for the examination of the horny layer;Marks;British Journal of Dermatology,1971
4. A modified technique (using polyester tape) of skin surface biopsy. Its interest for the investigation of athlete's foot;Lachapelle;British Journal of Dermatology,1977
5. Techniques for the evaluation of emollients and keratolytics;Marks;Journal of the Society of Cosmetic Chemists,1978