Ferrández Vega, D., C. Morón Fernández, P. Saiz Martínez, and J. P. Díaz Velilla. “System Based on Piezoelectric Sensors for Deflection Measurement in Concrete Beams”. Revista De La Construcción. Journal of Construction, vol. 18, no. 2, Aug. 2019, pp. 282-9, doi:10.7764/RDLC.18.2.282.