Kirij, Nataliya V.; Babadzhanova, Lesya A.; Movchun, Valeria N.; Yagupolskii, Yurii L.; Tyrra, Wieland; Naumann, Dieter; Fischer, Hendrik T.M.; Scherer, Harald Journal of Fluorine Chemistry, 2008 , vol. 129, # 1 p. 14 - 21