Davidyants, E. S.; Putieva, Zh. M.; Bandyukova, V. A.; Abubakirov, N. K.
Chemistry of Natural Compounds, 1984 , vol. 20, # 1 p. 121 - 122
Khimiya Prirodnykh Soedinenii, 1984 , vol. 20, # 1 p. 120 - 121