Narayanan , Sindhu and Kaelo , P.. (2021). A Linear Hybridization of Dai-Yuan and Hestenes-Stiefel Conjugate Gradient Method for Unconstrained Optimization.
            <i>Numerical Mathematics: Theory, Methods and Applications</i>. <i>14</i> (2).
            527-539.
         doi:10.4208/nmtma.OA-2020-0056