M. Wang and M. Wei. (2006). On the maximal-like solution of matrix equation <em>X</em>+<em>A</em>*<em>X</em><sup>-2</sup><em>A</em>=<em>I</em>*.
            <i>Numerical Mathematics, a Journal of Chinese Universities</i>. <i>15</i> (1).
            67-73.
         doi: