LORÈ, Alessandro; MAGALDI, Donatello; TALLINI, Marco. Morphology and morphometry of the Gran Sasso (Central Italy) surface karst. Geografia Fisica e Dinamica Quaternaria, [S. l.], v. 25, n. 2, p. 123–134, 2002. Disponível em: https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/419.. Acesso em: 8 dec. 2025.