Burger; Bryant
Journal of Organic Chemistry, 1939 , vol. 4, p. 119,122
Journal of the American Chemical Society, 1941 , vol. 63, p. 1054,1056

Boberg, Friedrich; Bruns, Wolfgang; Musshoff, Dagmar
Phosphorus, Sulfur and Silicon and the Related Elements, 1992 , vol. 72, # 1-4 p. 13 - 32