Volume 49, Issue 98, July 2003, Pages 232-248
Umima M. Mansour; Tafida M. Wahba; M. Hegazy; S.A. Essawy
Volume 49, Issue 97, April 2003, Pages 285-301
Maha S. Ziada; Tafida M. Wahba; M.F.A. Elsheltawy; G.M. Darwish