J. T. Chen. S. R. Kuo, Y. L. Huang and S. K. Kao, 2020, Revisit of logarithmic capacity of line segments and double-degeneracy of BEM/BIEM, Engineering Analysis with Boundary Elements, Vol.120, pp.238-245. (要檔案請洽原作者，檔名：EABE-2020-doubledegeneracy.pdf)

J. T. Chen, J. H. Kao, Y. L. Huang and S. K. Kao,2021, On the stress concentration factor of circular/elliptic hole and rigid inclusion under the remote anti-plane shear by using degenerate kernels, Archive of Applied Mechanics, Vol. 91, pp.1133-1155. (要檔案請洽原作者，檔名：aoam2021-chenKao2Huang.pdf)

 J. T. Chen, J. H. Kao, Y. L. Huang and S. K. Kao, 2021, Study on the stress intensity factor and the double-degeneracy mechanism in the BEM/BIEM for anti-plane shear problems, Theoretical and Applied Fracture Mechanics, Vol. 112, 102830. (要檔案請洽原作者，檔名：tafm2021-CHEN.pdf)

J. T. Chen, J. H. Kao, S. K. Kao, Y. T. Lee and S. R. Kuo, 2022, Study on the double-degeneracy mechanism of BEM/BIEM for a plane elasticity problem, Engineering Analysis with Boundary Elements, Vol.136, pp.290-302.