Van Asch, Theodore W.J., and Jean Philippe Malet. “Analysing the Kinematic Response to Groundwater Fluctuations of a Slow Moving Landslide in Varved Clays, Using Two Alternatives of the Equation of Motion”. Geografia Fisica E Dinamica Quaternaria, vol. 34, no. 1, June 2011, pp. 45-53, https://doi.org/10.4461/GFDQ.2011.34.5.