1. J. M. Tanner, Nature, 237, 433–439 (1972).
2. H. M. Goodman, Ann. N.Y. Acad. Sci. 148, Art. 2, 419–440 (1966).
3. N. Altszuler, I. Rathgeb, B. Winkler and R. C. de Bodo, Ann. N.Y. Acad. Sci. 148, Art. 2, 441–458 (1966).
4. J. N. Fain and R. Saperstein, Adipose Tissue (B. Jeanrenaud and D. Hepp, eds.) Hormone and Metabolic Research, Supplement 2, pp. 20–27. Georg Thieme Verlag, Stuttgart, Academic Press, New York, London (1970).
5. M. A. Lesniak, J. Roth, P. Gorden and J. R. Gavin, III, Nature New Biology, 241, 20–21 (1973).