COMBINED SCHEME FOR DEMERCAPTIZATION OF LIGHT FRACTIONS FROM CRUDE OILS AND GAS CONDENSATES OF THE CASPIAN DEPRESSION. A. M. Mazgarov, A. F. Vil’danov, V. M. Medem, I. A. Arkhireeva, S. A. Gorokhova, and B. V. Kizhaev. Khimiya i Tekhnologiya Topliv i Masel, No. ii, pp. 21-23, November, 1987