Spilotro, G., R. Pellicani, F. Canora, P. Allasia, D. Giordan, and G. Lollino. “Evolution of Techniques for Monitoring Unstable Slopes”. Italian Journal of Engineering Geology and Environment, no. 1, June 2017, pp. 5-18, doi:10.4408/IJEGE.2017-01.O-01.