Jinda Yang, Kai Zhang, Haiming Song & Ting Cheng. (2020). An Alternating Direction Method of Multipliers for Optimal Control Problems Constrained with Elliptic Equations.
            <i>Advances in Applied Mathematics and Mechanics</i>. <i>12</i> (2).
            336-361.
         doi:10.4208/aamm.OA-2018-0198