Kotarba A, Hercman H, Dramis F. On the age of Campo Imperatore glaciations, Gran Sasso Massif, Central Italy. Geog. Fis. Dinam. Quat. 2001;24(1):65-69. Accessed October 22, 2026. https://gfdq.glaciologia.it/index.php/GFDQ/article/view/444