1. A. L. Henne, Org. React., 1944, 2, 49
2. A. Roe, Org. React, 1949, 5, 193
3. A. Bondi, J. Phys. Chem., 1964, 68, 441
4. a) T. Nagai, G Nishioka, M. Koyama, A. Ando, T. Miki, I. Kumadaki, Chem. Pham. Bull., 1991, 39, 233
5. I Kumadaki, Fusso Yakugaku, (Y. Kobayashi, I. Kumadaki, T. Taguchi, eds.), p 5, Hirokawa, Tokyo (1993)