You can contact ( as referees). the following
professors with whom I have done some scientific work

1)       Prof. van Casteren , J.A.
Department of Mathematics and Computer Science
University of Antwerp (UIA)
Middelheimlaan 1
2020 Antwerp
Belgium

tel. +32 3 265 3889 (office)

tel. +32 3 265 3900 (secretary)

tel. +32 3 239 7733 (home)

Fax: +32 3 265 3777 (department)

E-mail adress: jan.vancasteren@ua.ac.be

2)      Prof. S.E.A. Mohammed
Department of Mathematics
Southern Illinois University at Carbondale
Carbondale, Illinois 62901-4408
U.S.A.
E-mail adress : Salah@sfde.math.siu.edu

3)Prof. S.A. Elsanousi
Department of Mathematics
Faculty of Science
King Saud University, Elryad
Saudi Arabia
E-mail adress: elsanousi@ksu.edu.sa