Pujadas, P., A. Blanco, S. Cavalaro, A. de la Fuente, and A. Aguado. “New Analytical Model to Generalize the Barcelona Test Using Axial Displacement”. Journal of Civil Engineering and Management, vol. 19, no. 2, Apr. 2013, pp. 259-71, doi:10.3846/13923730.2012.756425.