Bagirov, V. Yu.; Scheichenko, V. I.; Veselovskaya, N. V.; Sklyar, Yu. E.; Savina, A. A.; Kir'yanova, I. A.
Chemistry of Natural Compounds, 1980 , vol. 16, # 5 p. 439 - 441
Khimiya Prirodnykh Soedinenii, 1980 , vol. 16, # 5 p. 620 - 623