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3. — The Conversion of Purines to Pteridines under Mild Conditions. Proc. Biochem. Soc. (in press).
4. — Some Unsolved Problems. Ciba Colloquium on Pteridines, London, 1954.
5. Albert, A. and D. J. Brown: The Chelation of Pteridines. Proc. ist Internat. Congr. Biochem., Cambridge 1949, 241.