Maerker, Michael, et al. “Assessment of Soil Degradation Susceptibility in the Chacabuco Province of Central Chile Using a Morphometry Based Response Units Approach”. Geografia Fisica E Dinamica Quaternaria, vol. 31, no. 1, June 2008, pp. 47-53, https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/316.