1. D. L. Trumbo, T. K. Chen and H. J. Harwood, Macromolecules, 14, 1138 (1981).
2. D. L. Trumbo and H. J. Harwood, Polym. Bull., 18, 27 (1987).
3. D. L. Trumbo, Ph.D. Dissertation, The University of Akron, 1983.
4. J. W. Emsley, J. Feeney and L. H. Sutcliff, ?High Resolution Nuclear Magnetic Resonance Spectroscopy?, Vol. 2, Pergamon Press, London, New York (1966).
5. L. M. Jackman and S. Sternhell, ?Applications of Nuclear Magnetic Resonance Spectroscopy in Organic Chemistry?, Pergamon Press, New York, Sydney (1972).