1. Adams, M. H.: Science (Lancaster, Pa.) 120, 793 (1954).
2. Behr, G.: Cited from Chemical Activities of Fungi, by J. W. Foster, New York: Academic Press 1949.
3. Berry, H. K., and L. Cain: Arch. of Biochem. 24, 179 (1949).
4. Caspersson, T. O.: Cell Growth and Cell Function, New York: W. W. Norton & Co. 1950.
5. Chargaff, I. E.: Cited from The Nucleic Acids, Volume I, edited by I. E. Chargaff and J. N. Davidson, New York: Academic Press 1955.