Xucheng Meng & Guanghui Hu. (2022). A NURBS-Enhanced Finite Volume Method for Steady Euler Equations with Goal-Oriented $h$-Adaptivity.
            <i>Communications in Computational Physics</i>. <i>32</i> (2).
            490-523.
         doi:10.4208/cicp.OA-2021-0143