Yinghui Zhang,  Xiaojuan Deng,  Xing Zhao &  Hongwei Li. (2021). A Restricted Linearised Augmented Lagrangian Method for Euler's Elastica Model.
            <i>East Asian Journal on Applied Mathematics</i>. <i>11</i> (2).
            276-300.
         doi:10.4208/eajam.200520.191020