The L2 Norm Error Estimates for the Div Least-Squares Method. - Zhiqiang Cai 001; JaEun Ku (SIAM J. Numer. Anal., 2006)

A least-squares method for second order noncoercive elliptic partial differential equations. - JaEun Ku (Math. Comput., 2007)

A posteriori error estimators for the first-order least-squares finite element method. - JaEun Ku; Eun-Jae Park (J. Comput. Appl. Math., 2010)

Optimal Error Estimate for the Div Least-squares Method with Data f∈L2 and Application to Nonlinear Problems. - Zhiqiang Cai 001; JaEun Ku (SIAM J. Numer. Anal., 2010)

Goal-Oriented Local A Posteriori Error Estimators for H(div) Least-Squares Finite Element Methods. - Zhiqiang Cai 001; JaEun Ku (SIAM J. Numer. Anal., 2011)

Pointwise Error Estimates for First-Order div Least-Squares Finite Element Methods and Applications to Superconvergence and A Posteriori Error Estimators. - JaEun Ku (SIAM J. Numer. Anal., 2011)

Sharp L2-Norm Error Estimates for First-Order div Least-Squares Methods. - JaEun Ku (SIAM J. Numer. Anal., 2011)

Local A Posteriori Estimates on a Nonconvex Polygonal Domain. - JaEun Ku; Alfred H. Schatz (SIAM J. Numer. Anal., 2012)

Least-squares solutions as solutions of a perturbation form of the Galerkin methods: Interior pointwise error estimates and pollution effect. - JaEun Ku (J. Comput. Appl. Math., 2013)

Asymptotically exact a posteriori error estimators for first-order div least-squares methods in local and global L2 norm. - Zhiqiang Cai 001; Varis Carey; JaEun Ku; Eun-Jae Park (Comput. Math. Appl., 2015)

Numerical solutions for nonlinear elliptic problems based on first-order system. - JaEun Ku (Comput. Math. Appl., 2015)

Recent advances in numerical methods for systems of partial differential equations. - Abdul Q. M. Khaliq; JaEun Ku; Qin Sheng (J. Comput. Appl. Math., 2016)

Local error estimates for least-squares finite element methods for first-order system. - JaEun Ku (J. Comput. Appl. Math., 2016)

Superconvergence of least-squares methods for a coupled system of elliptic equations. - JaEun Ku (Comput. Math. Appl., 2018)

Simple efficient solvers for certain ill-conditioned systems of linear equations, including H(div) problems. - JaEun Ku; Lothar Reichel (J. Comput. Appl. Math., 2018)

A Dual Finite Element Method for a Singularly Perturbed Reaction-Diffusion Problem. - Zhiqiang Cai 001; JaEun Ku (SIAM J. Numer. Anal., 2020)

Localized pointwise error estimates for hybrid finite element methods. - JaEun Ku (J. Comput. Appl. Math., 2024)