1. Tlegenov, R., Doctoral (Chem.) Dissertation, Tashkent, 2008. 54 s.
2. Primuhamedov, Z.I. and Tillyaev, K.S., Uzb. Khim. Zh., 1981, no. 1, p. 52.
3. Primuhamedov, Z.I., Tillyaev, K.S., and Zaidova, R.A., Uzb. Khim. Zh., 1982, no. 3, p. 63; Saprikina, V.A., Vinogradova, V.I., Ambartsumova, R.F., Ibragimov, T.F., and Shakhidoyatov, Kh.M., Chem. Nat. Compd., 2004, no. 4, p. 276. https://doi.org/10.1007/s10600-006-0182-7
4. Abduvakhabov, A.A., Sadykov, A.A., Dalimov, D.N., and Aslanov, H.A., Alkaloidy i ikh proizvodnye kak instrument dlya izucheniya kholinergicheskoi sistemy (Alkaloids and Their Derivatives as a Tool for Studying the Cholinergic System), Tashkent: Fan, 1984.
5. RF Patent 2440997, 2012; Buyll. Izobret., 2012, no. 3.