1. Chernyaeva, G.N., Dolgodvorova, S.Ya., and Bondarenko, S.M., Ekstraktivnye veshchestva berezy (Birch Extractive Compounds), Krasnoyarsk, 1986.
2. Kislitsyn, A.N., Khim. Drev., 1994, no. 3, pp. 3–28.
3. Krasutsky, P.A., Carlson, R.M., Kolomitsyn, I.M., Edwardson, C., and Nesterenko, V.V., US Patent No. 09/038173, 2001.
4. Roshchin, V.I., Shabanova, N.Yu., and Vedernikov, D.N., RF Patent No. 2184120, Byul. Izobret., 2001, no. 18 (part II), pp. 16–17.
5. Shtan’ko, N.G., Extended Abstract of Cand. Sci. (Techn.) Dissertation, Moscow, 1953.