Shawali, Ahmad Sami; Mosselhi; Farghaly, Thoraya A.
Phosphorus, Sulfur and Silicon and the Related Elements, 2005 , vol. 180, # 10 p. 2391 - 2402

Elliott, Arthur J.; Gibson, Martin S.
Journal of Organic Chemistry, 1980 , vol. 45, p. 3677 - 3681