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Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science (English Translation), , vol. 29, # 4 p. 660 - 663
Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, , # 4 p. 915 - 918
Adams, Harry; Bailey, Neil A.; Denti, Gianfranco; McCleverty, Jon A.; Smith, John M. A.; Wlodarczyk, Andrzej
Journal of the Chemical Society, Chemical Communications, 1981 , # 7 p. 348 - 350
Canonica et al.
Atti della Accademia Nazionale dei Lincei, Classe di Scienze Fisiche, Matematiche e Naturali, Rendiconti, 1953 , vol. <8>14, p. 814,817