1. B. Abernethy , 1999 . On the Role of Woody Vegetation in Riverbank Stability . PhD Thesis , Monash University, Melbourne, Australia.
2. The use of the Slip Circle in the Stability Analysis of Slopes
3. Methods of Studying Root Systems
4. M.A. Carson, and M. J. Kirkby , 1972 . Hillslope Form and Process . Cambridge University Press, Cambridge, England, 475 pp.