Numerical Solution of Inverse Problem for Elliptic PDEs. - Ali Sayfy; Sadia M. Makky (Int. J. Comput. Math., 2003)

Seismic inverse problems: determining seismic wave speeds using arrival times. - Ali Sayfy; K. A. Azzawi; Sadia M. Makky (Int. J. Comput. Math., 2006)