Jiang , ShanProtasov , Anastasiya and Sun , Meiling. (2018). Balanced Truncation Based on Generalized Multiscale Finite Element Method for the Parameter-Dependent Elliptic Problem.
            <i>Advances in Applied Mathematics and Mechanics</i>. <i>10</i> (6).
            1527-1548.
         doi:10.4208/aamm.OA-2018-0073