E. Pennacchioni and P. Vivalda, “Variazioni morfologiche e granulometriche annuali di tre spiagge ghiaiose del litorale marchigiano meridionale : Annual morphology and granulometry variations of three pebble beaches of the Southern Marche (Central Italy)”, Geog. Fis. Dinam. Quat., vol. 8, no. 1, pp. 23–43, Jun. 1985, Accessed: Apr. 03, 2025. [Online]. Available: https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/917