Feng, Y., Zhou, W., Yue, Q., Wang, Q., Feng, Y., & Chang, X. (2019). The boundary element method for elasticity problems with concentrated loads based on displacement singular elements. Engineering Analysis with Boundary Elements, 99, pp. 195-205. doi:10.1016/j.enganabound.2018.11.016

Feng, Yuntian, Wei Zhou, Qiang Yue, Qiao Wang, Y.T Feng, and Xiaolin Chang. "The Boundary Element Method for Elasticity Problems With Concentrated Loads Based On Displacement Singular Elements." Engineering Analysis With Boundary Elements 99 (2019): 195-205.

Feng, Yuntian, et al. "The Boundary Element Method for Elasticity Problems With Concentrated Loads Based On Displacement Singular Elements." Engineering Analysis With Boundary Elements 99 (2019): 195-205.