1. Busch, E. W., H. Scheitza u.W. Thorn: Biochem. Z.335, 62 (1961).
2. Chargaff, E., u.J. N. Davidson: The Nucleic Acids. New York and London: Academic Press 1955.
3. Davidson, J. N.: The Biochemistry of the Nucleic Acids. London: Methuen & Co. LTD 1961.
4. Thorn, W.: Leber und Nachbarorgane. Stuttgart: Georg Thieme 1962.
5. Thorn, W., u.E. W. Busch: Biochem. Z.333, 252 (1960).