Journal of the American Chemical Society, , vol. 107, # 5 p. 1450 - 1452

Niyazymbetov, Murat E.; Rongfeng, Zhou; Evans, Dennis H.
Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999), 1996 , # 9 p. 1957 - 1962

Gmelin Handbook: S: SVol.4a/b, 1.3.8.11.3, page 217 - 219