An extended conjugate gradient algorithm for the diffusion equation. - Sunday A. Reju; Matthew A. Ibiejugba; David J. Evans 001 (Int. J. Comput. Math., 1999)

On the control of the navier- stokes equation with the extended conjugate gradient method. - Sunday A. Reju; Matthew A. Ibiejugba; David J. Evans 001 (Int. J. Comput. Math., 2000)

Computational results of the optimal control of the diffusion equation with the extended conjugate gradient algorithm. - Sunday A. Reju; Matthew A. Ibiejugba; David J. Evans 001 (Int. J. Comput. Math., 2000)

Optimal control of the wave propagation problem with the extended conjugate gradient method. - Sunday A. Reju; Matthew A. Ibiejugba; David J. Evans 001 (Int. J. Comput. Math., 2001)

Geomagnetically induced current model for the Namibian High Voltage Network. - Gideon Gope; Khoetage Dax; Sunday A. Reju; Pierre Cilliers (AFRICON, 2015)