Refreeing

        1. Ph.D. ,Um El Kora Univ., Faculty of Education, Mecca ,1996.

2. Papers in Math.,Third Intern. Conf. on Eng. Math. and       Physics, Cairo ,1997.

3. Papers in Math., Scientific Eng. Bulletin (Fac. of Eng. , Cairo Univ. ),1998,1999,2000.

4. Papers in Math., A.M.S.E. Journals ( France ), 1998,1999.

5. Papers in Math., Scientific Eng. Bulletin, Ain Shams Univ., 2000.

6. M.Sc., Mansoura Univ. , Fac. of Eng. , Math. and Phys. Science dept. Nov. 20, 2000 .

7. Ph.D. , Assiut Univ. , Faculty of science,Math. Dept., Jan. 7^th,2001 .

8. M.Sc. , Cairo Univ. , Faculty of Eng. , Eng. Math. Dept., Jan 8^th,2001 .

9. M.Sc., Ain Shams Univ., Faculty of Girls for science , art and education, March 1,2001 .

      10. M.Sc., Assiut Univ. , Faculty of science,Math. Dept., July 2001.

      11. M.Sc., South Valley Univ., Faculty of Science, Math. Dept.,

            July, 2001.

      12. Ph.D., Ain Shams Univ., Faculty of Eng. , Eng. Math. Dept.,

            sep. 3,2001.

      13. M.Sc., Assiut Univ. , Faculty of Science, Math. Dept.,Sep. 2001.

      14. M.Sc., Assiut Univ. , Faculty of Science, Math. Dept.,Sep. 2001.