1. V. D. Tikhova, T. F. Bogdanova, V. P. Fadeeva, V. N. Piottukh-Peletsky, J. Anal. Chem. (Engl. Transl.), 2013, 68, 86–94 [Zh. Anal. Khim., 2013, 68, 1–9].
2. D. S. Orlov, Gumusovye kisloty pochv i obshchaya teoriya gumifikatsii [Humic Acids of Soils and General Theory of Humification], Mosk. Gos. Univ., Moscow, 1990, 325 pp. (in Russian).
3. S. G. Mamylov, O. I. Lomovskii, N. V. Yudina, Tez. dokl. konf. "Guminovye veshchestva v biosfere-5" [Proc. Conf. "Humic Matter in Biosphere-5"] (St. Petersburg, March 2010), St. Petersburg, 2010, p. 277–281 (in Russian).
4. A. A. Ivanov, N. V. Yudina, O. I. Lomovskii, Izv. Tomsk. Politekhn. Un-ta [Bulletin of Tomsk Polytechnical University], 2006, 309, No. 5, 73–77 (in Russian).
5. O. I. Lomovskii, V. V. Boldyrev, Mekhanokhimiya v reshenii ekologicheskikh zadach: analiticheskii obzor [Mechanochemistry in the Solution of Ecological Problems: Analytical Review], GPNTB SO RAN, Novosibirsk, 2006, 221 pp. (in Russian).