1. Canceill, J. et al, Bull. Soc. Chim. Fr., 1974, 2833.
2. Parvez, M. et al, Acta Cryst. C, 1995, 51, 644 (cryst struct, abs config)
3. Haddad, N. et al, J.O.C., 1994, 59, 6090 (synth, ir, pmr)
4. Nitta, M. et al, J.C.S. Perkin 1, 1994, 2721 (synth, uv, pmr, cmr)
5. Nitta, M. et al, J.C.S. Perkin 1, 1995, 1001 (synth, pmr, cmr, ir)