Parshina; Sokolyanskaya; Nosyreva; Scotheim; Zefirov; Trofimov
Russian Journal of Organic Chemistry, 1999 , vol. 35, # 2 p. 202 - 206

Kiplinger, Jeffrey P.; Bursey, Maurice M.
Organic Mass Spectrometry, 1988 , vol. 23, p. 342 - 349