, Alegre, V.; Antonio, T.; Carrasco, E.; T. “Losses Approximation of Alumina Concrete Pre-Stressed Small Beams”. Hormigón y Acero 55, no. 233 (January 5, 2004). Accessed May 18, 2024. http://www.hormigonyacero.com/index.php/ache/article/view/185.