1. Krausz F., Martin R. (1963) C. R. Acad. Sci.256: 5594
2. Krausz F., Martin R. (1965) Bull. Soc. Chim. Fr.1965: 2192
3. Mitsui Petrochemical Industries, Ltd. (1985) Japanese patent 4149; (1985) Chem. Abstr.102: 203729s
4. Martin R., Demerseman P. (1989) Synthesis1989: 25
5. Tchitchibabine A. E. (1942) Ann. Chim.17: 321