1. R. D. ATHEY, Jr., Ph.D. Dissertation, University of Delaware, May 1974
2. F. P. BALDWIN, G. W. BURTON, K. GRIESBAUM, and G. HANINGTON, Adv. Chem. Ser., 91, 448 (1969)
3. V. S. C. CHANG, unpublished results (1980)
4. B. IVÁN, unpublished results (1980)
5. B. IVÁN, J. P. KENNEDY, T. KELEN, and F. TÜDÖS, J. Macromol. Sci.-Chem., in press (1980a)