A PRELIMINARY SURVEY FOR TESTING OPERATIVITY AND EFFICIENCY OF GPR TECHNOLOGY BY MEANS OF UNSHIELDED ANTENNA FOR THE STUDY OF CALDERONE GLACIER, CENTRAL ITALY (A. Monaco & . M. Scozzafava , Trans.). (2016). Alpine and Mediterranean Quaternary, 30(1), 5-10. https://amq.aiqua.it/index.php/amq/article/view/107