Morel-Fourrier, Christophe; Dulcere, Jean-Pierre; Santelli, Maurice
Journal of the American Chemical Society, 1991 , vol. 113, # 21 p. 8062 - 8069

Cheskis, B. A.; Yarutich, A. P.; Lebedeva, K. V.; Moiseenkov, A. M.
Chemistry of Natural Compounds, 1985 , vol. 21, # 1 p. 103 - 105
Khimiya Prirodnykh Soedinenii, 1985 , vol. 21, # 1 p. 107 - 110