Bettella, F., G. B. Bischetti, V. D’Agostino, S. Marai, E. Ferrari, and T. Michelini. “Comparison of Measurement Methods of the Front Velocity of Small-Scale Debris Flows”. Journal of Agricultural Engineering, Vol. 46, no. 4, Dec. 2015, pp. 129-37, doi:10.4081/jae.2015.472.