Consoli, Alessio. “Karstic Phenomena In The Massiccio Del Monte Velino (Central Apennine, Abruzzo)”. Bollettino della Società Geografica Italiana (December 31, 2004): 377–411. Accessed October 14, 2026. https://www.bsgi.it/index.php/bsgi/article/view/7000.