1. C. A. Coulomb, "Test on an application of the rules of maximums and minimums to some static problems, related to architecture," Mem. Math. Phys., 3, 38 (1776).
2. W. J. M. Rankine, "On the stability of loose earth," Proc. R. Soc. London, 147, 9-27 (1857).
3. T. H. Wu, Soil Mechanics, Allyn and Bacon, Boston (1976).
4. K. Terzaghi, R. B. Peck, and G. Mesri, Soil Mechanics in Engineering Practice, John Wiley & Sons, New York (1996).
5. Y. Z. Wang, "Distribution of earth pressure on a retaining wall," Geotechnique, 50, 83-88 (2000).