1. Yehimov, V., Lööper, R., Doilov, S., and Tsyplakov, P. (1992), Influence of kukersite oil shale quality on dissociation of carbonates contained in mineral matter from processing in generators, Oil Shale 9, 159–173.
2. . Peterson, E. J., Spall, W. D. (1983), Physical and Chemical Characterization and Comparison of Solids, Liquids and Oils from Estonian and Green River Formation Shales, Los Alamos National Laboratory Report.
3. Yehimov, V., and Kundel, H. (1991) Specific features of kukersite processing in laboratory-scale and commercial retorts, Oil Shale
8 158–167.
4. Mayes, A. S.(1998), Environmental Audit.
5. Pre-project estimate from Environmental Audit of the Estonian Academy of Sciences (1995).