参考文献

Shevchuk, G. V.; Vollerner, Yu. S.; Shashkov, A. S.; Chirva, V. Ya. Chemistry of Natural Compounds, 1991 , vol. 27, # 5 p. 597 - 603 Khimiya Prirodnykh Soedinenii, 1991 , # 5 p. 678 - 686