1. N. M. Abezgauz and N. V. Mailyants, Trudy VNIIneft’, No. 27, 64–72 (1960).
2. Methods of Investigation of Crude Oils and Petroleum Products [in Russian], Gostoptekhizdat, Moscow (1955), p. 168.
3. B. M. Rybak, Analysis of Crude Oil and Petroleum Products [in Russian], Gostoptekhizdat, Moscow (1962), pp. 60–66.