S. He, and C.T. Ng. “Analysis of Mode Conversion and Scattering of Guided Waves at Cracks in Isotropic Beams Using a Time-Domain Spectral Finite Element Method”. Electronic Journal of Structural Engineering 14, no. 1 (January 1, 2015): 20–32. Accessed May 3, 2024. https://ejsei.com/EJSE/article/view/186.