1. Potentiometric and aquifer property changes above subsiding Longwall mine panels, Illinois basin coalfield;Booth;J. Groundwater,1992
2. Chekan, G., Listak, J., 1993. Design practices for multiple-seam longwall mines. Information Circular 9360. U.S. Bureau of Mines, Pittsburgh, PA. 35 pp.
3. Chuen, L.T., 1979. Practice and knowledge of coal mining under water bodies. 10th World Mining Congress, Istanbul.
4. Cook, N.G.W., 1967. Design of underground excavations. In: Fairhurst, C. (Ed.), Proc. 8th Symp. on Rock Mech., Univ. Minnesota. New York, AI.M.M, pp. 167–193.
5. Critical review of strata movement theories and their application to practical problems;Denkhaus;J. South Afr. Inst. Min. Metall.,1964