1. Yoshimuri, R. N., thesis, Univ. California (1971).
2. Bovre, K., and Szybalski, W., in Methods in Enzymology (edit. by Grossman, L., and Moldave, K.), 21, 350 (Academic Press, New York, 1971).
3. Davis, R. W., Simon, M., and Davidson, N., in Methods of Enzymology (edit. by Grossman, L., and Moldave, K.), 21, 413 (Academic Press, New York, 1971).
4. Delius, H., Mantell, N. J., and Alberts, B., J. Mol. Biol., 67, 341 (1972).
5. Hershey, A. D., Burgi, E., and Ingraham, L., Proc. US Nat. Acad. Sci., 49, 748 (1963).