Villagra, M. T., and C. Tores Formoso. “Evaluation of the Physical Workload of Bricklayers During the Execution of Block Walls”. Revista Ingeniería De Construcción, vol. 15, no. 2, Aug. 2000, pp. 91-99, https://horizonteenfermeria.uc.cl/index.php/ric/article/view/17411.