A PRELIMINARY SURVEY FOR TESTING OPERATIVITY AND EFFICIENCY OF GPR TECHNOLOGY BY MEANS OF UNSHIELDED ANTENNA FOR THE STUDY OF CALDERONE GLACIER, CENTRAL ITALY. AMQ [Internet]. 2016 Dec. 3 [cited 2024 Jul. 27];30(1):5-10. Available from: https://amq.aiqua.it/index.php/amq/article/view/107