1. J. N. Davidson, “The Biochemistry of the Nucleic Acids,” 4th ed., John Wiley and Sons, Inc., New York, 1960.
2. E. Schrödinger, “What is Life?” Cambridge University Press, New York, 1963.
3. S. Zamenhof, R. DeGiovanni, and R. J. Rich, J. Bacteriology 71: 60 (1956).
4. O. T. Avery, C. M. McLeod, and M. McCarty, “Studies on the Chemical Nature of the Substance Inducing Transformation of Pneumococcal Types. Induction of Transformation by a Desoxyribonucleic Acid Fraction Isolated from Pneumococcus Type III.” J. Expt. Med. 79: 137 (1944).
5. R. D. Hotchkiss, Transfer of Penicillin Resistance in Pneumococci by the Desoxyribonucleate Derived from Resistant Cultures, Cold Spring Harbor Symp. Quant. Biol. 16: 457 (1951).