, Casas Rius, J.R.; Aparicio Bengoechea, A. “The Dynamic Response As a Non Destructive Test for Structures Inspection and Control”. Hormigón y Acero 39, no. 167 (January 3, 1988). Accessed May 17, 2024. http://hormigonyacero.com/index.php/ache/article/view/880.