Leone, Antonio P., Pasquale Tedeschi, and Gary G. Wrigth. 1996. “Landsat Satellite Data for Soil Investigations in an Apennines Region of Southern Italy”. Geografia Fisica E Dinamica Quaternaria 19 (2): 371-80. https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/601.