García-Ledesma, R., J. Oñoro, J. M. Amo, M. C. Durán, and J. Durán. “Thickness Influence in Mechanical Properties of Polyurethane Adhesive Overlap Joints”. Revista De Metalurgia, vol. 41, no. 1, Feb. 2005, pp. 60-65, doi:10.3989/revmetalm.2005.v41.i1.187.