Basu, Basudeb; Das, Sajal; Das, Pralay; Nanda, Ashish K.
Tetrahedron Letters, 2005 , vol. 46, # 49 p. 8591 - 8593

Maruthikumar; Rao, P. Hanumantha
Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2003 , vol. 42, # 2 p. 343 - 345