1. Alekseev, A.D., Airuni, A.T., Vasyuchkov, Yu.F., Zverev, I.V., Sinolitskii, V.V., Dolgova, M.O., and Ettinger, I.L., RF Inventor’s Certificate no. 9, 1994.
2. Ettinger, I.L. and Shul’man, N.V., Conditions of gas hydrates in coal seams, Bezop. Truda Prom-sti, 1974, no. 2, pp. 30–32.
3. Shepeleva, S.A., Dyrdin, V.V., Kim, T.L., et al., Metan i vybrosoopasnost’ ugol’nykh plastov (Methane and Its Release Danger from Coal Seams), Tomsk: Tomsk. Gos. Univ., 2015.
4. Liu S. and Harpalani S. A new theoretical approach to model sorption induced coal shrinkage or swelling, AAPG Bull., 2013, vol. 97, no. 7, pp. 1033–1049.
5. Li, B., Wei, J., Wang, K., et al., A method of determining the permeability coefficient of coal seam based on the permeability of loaded coal, Int. J. Min. Sci. Technol., 2014, vol. 24, no. 5, pp. 637–641.