Volume 10, Issue 2, December 2001, Pages 11-17
Mohamed Hassan; Mona El-Azab; EI-Sayed El-Awady; Soad Abou-El-Ela
Volume 5, Issue 2, December 1996, Pages 1-3
Mohamed Hassan; Abdel -Alim Abdel-Alim
Volume 5, Issue 1, June 1996, Pages 115-119
Mohamed Hassan; Mohamed Abdel- Haleem