X. LIU, Y. YANG, H. GAO, Y. BAO, R. LI, and L. CHEN, “Effects of Hole-Perpendicularity Error on Joint Stiffness of Single-Lap Double-Bolt Composite Joints”, Eng. Trans., vol. 65, no. 2, pp. 289–305, Jun. 2017, doi: 10.24423/engtrans.394.2017.