参考文献

Aksjonova, Kristine; Belyakov, Sergey; Liepinsh, Edvards; Boman, Arne; Lundstedt, Torbjorn; Lek, Per; Trapencieris, Peteris Synthesis (Germany), 2012 , vol. 44, # 14 art. no. SS-2012-N0094-OP, p. 2200 - 2208