1. Tyeryar, F. J., Taylor, H. J., Lawton, W. D., & Goldberg, I. D., J. Bact., 100, 1027 (1969).
2. Szybalski, W., in Methods in Enzymology (edit. by Grossman, L., and Moldave, K.), 21, D, 350 (Academic Press, New York, 1971).
3. Wyatt, G. R., in The Nucleic Acids (edit. by Chargaff, E., and Davidson, J. N.), 1, 243 (Academic Press, New York, 1955).
4. Wyatt, G. R., & Cohen, S. S., Biochem. J., 55, 774 (1953).
5. Brandon, C., Gallop, P. M., Marmur, J., Hayashi, H., & Nakanishi, K., Nature New Biology, 239, 70 (1972).