1. M. D. Mashkovskii, Drugs [in Russian], Meditsina, Moscow (1986), Vol. 2, pp. 280 – 281.
2. A. Kh. Avetisyan, T. R. Ovsepyan, N. O. Stepanyan, and L. G. Sapondzhyan, Khim.-farm. Zh., 15(6), 69 – 72 (1981).
3. R. P. Rao and J. N. Singh, Vijnana Parishad Anusandhan Patrika, 16(2), 73 – 87 (1973); Chem. Abstr., 79, 105151.
4. T. R. Ovsepyan, A. Kh. Avetisyan, and A. P. Engoyan, Arm. Khim. Zh., 36( 5) , 309 – 313 (1983).
5. T. R. Ovespyan, L. A. Gushoglyan, and V. S. Mirzoyan, Arm. Khim. Zh., 41(3), 136 – 142 (1988).