Ge , LiangNiu , Haifeng and Zhou , Jianwei. (2021). Convergence Analysis and Error Estimate for Distributed Optimal Control Problems Governed by Stokes Equations with Velocity-Constraint.
            <i>Advances in Applied Mathematics and Mechanics</i>. <i>14</i> (1).
            33-55.
         doi:10.4208/aamm.OA-2020-0302