Volume 25, Issue 1, June 2002, Pages 53-68
M. Fetuoh; S. Ismail; S. El-Harras; M. Abbas
Volume 20, Issue 1, June 1997, Pages 95-104
S. A. El-Harras
Volume 17, Issue 1, July 1994, Pages 73-79
S. A. El-Harras; S. Shawky; E. Hafez; S. Shaker