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2. Elgjo K, Clausen OPF, Thorud E (1981) Epidermis extracts (chalone) inhibit cell flux at the G1-S, S-G2 and G2-M transitions in mouse epidermis. Cell Tiss Kinet 14:21–29
3. Laerum OD, Bjerknes R (1972) Seasonal and individual metabolic variations of hairless mouse skin. J Invest Dermatol 58:284–290
4. Laerum OD, Paukovits WR, Aardal NP, Morild I (1979) Modification of myelopoiesis by granulocyte chalone: Possible implications for chronobiology. Abstr. XIV International Conference on Chronobiology, Hannover
5. Laerum OD, Aardal NP (1981) Chronobiological aspects of bone marrow and blood cells. In: von Mayersbach H, Scheving LE, Pauly JE (eds) Biological rhythms in structure and function Allan R. Liss, Inc., New York pp 87–97