1. Bump V. L. (1988). “Forest City landslide: Foundation and geology.” Geotechnical Rep. Division of Highways South Dakota Department of Transportation Pierre S.D. revised 2nd printing.
2. Byrne R. J. Kendall J. and Brown S. (1992). “Cause and mechanism of failure Kettleman Hills Landfill B-19 Phase IA.” Stability and performance of slopes and embankments—II ASCE Geotechnical Special Publication No. 31 Vol. 2 1188–1215.
3. Chang M.-H. (1992). “Slope stability analysis of lined waste landfills.” Ph.D. dissertation Univ. of California Berkeley Calif.
4. Chang M.-H. Mitchell J. K. Seed R. B. and Dunn R. J. (1993). “Effects of basin geometry on stability of lined waste landfills.” Proc. WasteTech ’93 National Solid Wastes Management Association Marina del Ray Calif.
5. Landslides and rapid-flowage phenomena near Pierre, South Dakota