Gould, Steven J.; Melville, Chris R.; Cone, Martha C.; Chen, Jiong; Carney, John R.
Journal of Organic Chemistry, 1997 , vol. 62, # 2 p. 320 - 324

Hauser, Frank M.; Zhou, Maotang
Journal of Organic Chemistry, 1996 , vol. 61, # 17 p. 5722 - 5722