Optimal Estimates for the Perfect Conductivity Problem with Inclusions Close to the Boundary. - Haigang Li; Longjuan Xu (SIAM J. Math. Anal., 2017)

Gradient Estimates for Divergence Form Elliptic Systems Arising from Composite Material. - Hongjie Dong; Longjuan Xu (SIAM J. Math. Anal., 2019)

Gradient Estimates for Stokes and Navier-Stokes Systems with Piecewise DMO Coefficients. - Jongkeun Choi; Hongjie Dong; Longjuan Xu (SIAM J. Math. Anal., 2022)

Stress Blowup Analysis When a Suspending Rigid Particle Approaches the Boundary in Stokes Flow: 2-Dimensional Case. - Haigang Li; Longjuan Xu; Peihao Zhang (SIAM J. Math. Anal., 2023)

Second Derivative Estimates and Gradient Asymptotics for Closely Located Inclusions in Linear Elasticity. - Haigang Li; Longjuan Xu (SIAM J. Math. Anal., 2025)