1. Lea, D. E., Actions of Radiations on Living Cells (Camb. Univ. Press, 1947).
2. Pollard, E. C., Guild, W. R., Hutchinson, F., and Setlow, R. B., Prog. Biophys., 5, 72 (1955).
3. Adams, W. R., and Pollard, E. C., Arch. Biochem. Biophys., 36, 311 (1952).
4. Setlow, R. B., Proc. U.S. Nat. Acad. Sci., 38, 166 (1952).
5. Bacq, Z. M., and Alexander, P., Fundamentals of Radiobiology, 210 (Pergamon Press, 1961).