1. A. M. Kuliev, Chemistry and Technology of Additives for Oils and Fuels [in Russian], Khimiya, Leningrad (1985), pp. 139?146.
2. S. Z. Kaplan and I. F. Radzevenchuk, Viscosity Index Improvers and Polymer-Compounded Oils [in Russian], Khimiya, Leningrad (1982).
3. A. M. Kuliev, Z. A. Sadykhov, and A. M. Levshina, Uch. Zap. Azerb. Gos. Univ., No. 2, 27?29 (1964).
4. A. I. Akhmedov, A. M. Levshina, and Z. A. Sadykhov, Neftekhimiya,19, no. 1, 134?138 (1979).
5. A. I. Akhmedov, Z. A. Sadykhov, and A. M. Levshina, Uch. Zap. Azerb. Gos. Univ., No. 3, 87?89 (1972).