1. Jones ME (1980) Annu Rev Biochem 49:253
2. Lieberman I, Kornberg A, Simms ES (1954) J Am Chem Soc 76:2844
3. Wright LD, Miller CS, Skeggs HR, Huff JW, Weed LL, Wilson DW (1951) J Am Chem Soc 73:1898
4. Suttle DP, Becroft DMO, Webster DR (1989) In: Schriver CR, Beaudet AL, Sly WS, Valle D (eds) The metabolic basis of inherited disease. McGraw-Hill, New York, p 1095
5. Handschumacher RE, Calabresi P, Welch AD, Bono V, Fallon H, Frei E (1962) Cancer Chemother Rep 21:1