Monteagudo, S. M., M. J. Casat, and J. C. Gálvez. “Influence of the Bed Joint Thickness on the Bearing Capacity of the Brick Masonry under Compression Loading: An Ultrasound Assessment”. Revista De La Construcción. Journal of Construction, vol. 14, no. 1, Apr. 2015, pp. 9-15, http://146.155.94.136/index.php/RDLC/article/view/13256.