Volume 19, KGS, 2011, Pages 229-255
Hebatallah Mohamed FATHY
Volume 18, KGS, 2009, Pages 111-138
Hebatallah Mohamed FATHY
Volume 17, KGS, 2007, Pages 403-428
Hebatallah Mohamed FATHY
Volume 11, KGS, 1999, Pages 333-336
Hebatallah Mohamed FATHY