1. E. W. Montroll and N. S. Goel, Biopolymers 4, 855 (1966).
2. J. Marmur, R. Rownd, and C. L. Schildkraut, in PROGRESS IN NUCLEIC ACID RESEARCH, Vol. 1, Academic Press, New York, 1963, pp. 231–300.
3. G. Felsenfeld and H. Todd Miles, in Ann. Rev. of Biochem., 1967, pp. 407–448.
4. G. Newell and E. W. Montroll, Rev. Mod. Phys., 25, 353 (1953).
5. N. S. Goel, N. Fukuda and R. Rein, preprint (1967). R. Rein, N. S. Goel, N. Fukuda, M. Pollak and P. Claverie, Annals N. Y. Acad. Sci., to be published.