, Vázquez Herrero, C.; Martínez Abella, F. “The Need to Enhance the Standard Test to Determine Bond Properties of Pretensioned Concrete Structures”. Hormigón y Acero 55, no. 231 (January 1, 2004). Accessed May 17, 2024. http://www.hormigonyacero.com/index.php/ache/article/view/205.