1. Anderson, D. C., Artiola, J. F., Crawley, W. W., Shiver, L. R. and Unger, M.: 1984, ?Weathering Effects On Exposed Soil Liners?, Proceedings Twelfth Annual Research Symposium. Land Disposal, Remedial Action, Incineration and Treatment of Hazardous Waste? U. S. Environmental Protection Agency, Cincinnati, OH.
2. Boynton, S. S.: 1983, ?An Investigation of Selected Factors Affecting the Hydraulic Conductivity of Compacted Clay?, M. S. Thesis. Civil Engineering Department, University of Texas, Austin, Texas, 79 p.
3. Cibor, J. M., Meehdiratta, G. R. and Martin, J. D.: 1989, ?Improved Methodology for Constructing Soil Liners Using Highly Plastic Clay?, Proceedings of The 10th National Conference, Superfund 89', November 27?29, 1989, Washington, D. C., pp. 512?518.
4. Daniel, D. E.: 1984, J. of Geotechn. Eng. ASCE 110(2), 285.
5. Fuller, A. O.: 1961, J. of Sedimentary Petrology 31, 256.