M. Nauman Aslam, Jiazhong Zhang, Nannan Dang and Riaz Ahmad. (2018). An Improved Model Reduction Method on AIMs for N-S Equations Using Multilevel Finite Element Method and Hierarchical Basis.
            <i>Numerical Mathematics: Theory, Methods and Applications</i>. <i>12</i> (1).
            115-133.
         doi:10.4208/nmtma.OA-2017-0106