Ismail , Nur Inshirah NaqiahMajid , Zanariah Abdul and Senu , Norazak. (2022). Numerical Solution for Neutral Delay Differential Equation of Constant or Proportional Type Using Hybrid Block Method.
            <i>Advances in Applied Mathematics and Mechanics</i>. <i>14</i> (5).
            1138-1160.
         doi:10.4208/aamm.OA-2020-0054