Nitz, Theodore J.; Volkots, Deborah L.; Aldous, David J.; Oglesby, Richard C.
Journal of Organic Chemistry, 1994 , vol. 59, # 19 p. 5828 - 5832

Kashima,C. et al.
Bulletin of the Chemical Society of Japan, 1973 , vol. 46, p. 310 - 313