Mustafin, A. G.; Khalilov, I. N.; Abdakhmanov, I. B.; Tolstikov, G. A.
Chemistry of Natural Compounds, 1989 , vol. 25, # 6 p. 693 - 695
Khimiya Prirodnykh Soedinenii, 1989 , # 6 p. 816 - 818

Mustafin; Khalilov; Ismagilov; Baimetov; Spirikhin; Abdrakhmanov; Tolstikov
Russian Chemical Bulletin, 1999 , vol. 48, # 11 p. 2121 - 2126