Ferrara, V., G. Pappalardo, and F. Rapisarda. “Lateral Spread Evolving from a Deep-Seated Gravitational Slope Deformations to the Front of the Apenninic-Maghrebian Chain (southern Sicily)”. Italian Journal of Engineering Geology and Environment, Oct. 2008, pp. 137-49, doi:10.4408/IJEGE.2008-01.S-10.