Volume 40.2, Issue 80, January 1999, Pages 319-332
A.S. Amin; G.M. Darwish; Maha S. Ziada; H.M. Hassan
Volume 40.2, Issue 80, January 1999, Pages 333-344
Mary G. Abdel-Malak; M.A. El-Sheltawi; H.M. Hassan; G. Abdel-Malak; K.N. Mettias