Pawar, A. S.; Chattopadhyay, S.; Mamdapur, V. R.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1993 , vol. 32, # 4 p. 463 - 464

Pawar, A. S.; Chattopadhyay, S.; Mamdapur, V. R.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1993 , vol. 32, # 4 p. 463 - 464

Harcken, Christian; Brueckner, Reinhard
Angewandte Chemie, International Edition in English, 1997 , vol. 36, # 24 p. 2750 - 2752
Angewandte Chemie, 1997 , vol. 109, p. 2866 - 2868