1. Bloomfield, V. A., Crothers, D. M. and Tinoco, Jr. I. (1974)Physical Chemistry of Nucleic Acids, (New York: Harper and Row) p. 294.
2. Borochov, N., Eisenberg, H. and Kam, Z. (1981)Biopolymers,20, 231.
3. Borochov, N. and Eisenberg, H. (1984)Biopolymers,23, 1757.
4. Crawford, J. L., Kolpak, F. J., Wang, A. H. J., Quigley, G. J., VanBoom, J. H., Van der Marel, G. and Rich, A. (1980)Proc. Natl. Acad. Sci. USA,77, 4016.
5. Dickerson, R. E., Kopaka, M. L. and Drew, H. R. (1982) inConformation in Biology (eds R. Srinivasan and R. H. Sarma) (New York: Adenine Press) p. 227.