El-Barbary, Ahmed A.; Aly, Youssef L.; Hashem, Abdel-Fatah M.; El-Shehawy, Ashraf A.
Phosphorus, Sulfur and Silicon and Related Elements, 2000 , vol. 160, p. 77 - 91
Coyle, John D.; Bryant, Laurence R.B.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1983 , # 3 p. 531 - 534