4Morgenstem N R, Price V E. The analysis of stability of general slip surface[J]. Geotechnique, 1965, 15:79 - 93.
5Spencer E E. A method of the analysis of the stability of embankments assuming parallel inter-slice forces[J]. Geotechnique,1967, 17, 11-26.
6Bishop A W. The use of slip circle in the stability analysis of slopes[J],Geotechnique, 1955, 5(1): 7-17.
7Greco V R. Efficient Monte Carlo technique for locating critical slip surface[J]. J. Geotech. Engrg, ASCE, 1996, 122(7): 517 - 525.
8Janbu N. Slope stability computations[A]. In: Embankment Dam Engineering, Casagrande Memorial Volume[C]. New York: John Wiley and Sons, 1973.47 - 86.
9Fredlund D G, Krahn J, Pufahl D E, The relationship of limit equilibrium slope stability methods[A]. In: Proc, the 10th Int. Conf.Soil Mech. Found. Eng,[C]. Stockholm, Sweden:[s. n.], 1981.409 - 416.
10Fredlund D G, Rahardjo H. Soil Mechanics for Unsaturated Soils[M].New York: John Wiley and Sons, 1993.