1. Meares, C. F., Sundberg, M. W., and Baldeschwieler, J. D., Proc. natn. Acad. Sci. U.S.A., 69, 3718–3722 (1972).
2. Vogel, A. I., Practical organic chemistry, 567–568 (Longmans, Green, New York, 1948).
3. Blombäck, B., and Blombäck, M., Ark. Kemi., 10, 415–443 (1956).
4. Marshall, A. G., Werbelow, L. G., and Meares, C. F., J. chem. Phys., 57, 364–370 (1972). Erratum: page 4508.
5. Rockwell, S. C., Kallman, R. F., and Fajardo, L. F., J. natn. Cancer Inst., 49, 735–749 (1972).