1. Alm, G.V., Peterson, R.D.A.: Nature, London 229, 201-202 (1971) (zitiert nach Payne, 1971).
2. Annison, E.F.: Lipid and acetate metabolism. In: Physiology and biochemistry of the domestic fowl, (eds. Bell, D.J., Freeman, B.M.) Vol. 1, p. 321–334, London, New York: Academic Press 1971.
3. Archer, R.: Blood coagulation. In: Physiology and biochemistry of the domestic fowl. (eds. Bell, D.J., Freeman, B.M.) Vol. 2, p. 897–910. London, New York: Academic Press 1971.
4. Archer, R., Chauvet, J., Chauvet, M.-T.: Eur. J. Biochem. 17, 509–513 (1970) (zitiert nach A. Stockell Hartree, 1971).
5. Assenmacher, I.: The peripheral endocrine glands. In: Avian biology. (eds. Farner, D.S., King, J.R.) Vol. 3, p. 184–262. New York, San Francisco, London: Academic Press; subsidiary of Harcourt Brace Jovanovich, 1973.