Collaborations
National Collaborations
International Collaborations
- A. Guessab ( Université de Pau et des Pays de l'Adour, Pau)
- K. Hormann (Lugano, Switzerland)
- D. Barrera,
M.J. Ibáñez Pérez,
J. F. Reinoso
(Granada, Spain)
- F. Marcellan (Universidad Carlo III de Madrid, Spain)
- G. Milovanović (Universidad Carlo III de Madrid, Spain)
- B. Zerroudi (Ibn Zohr university, Morocco)
- O. Nouisser (Université Ibn Tofail, Morocco)
- N. Siar (Université Moulay Ismail Meknès, Morocco)
- R.M. Hafez (Matrouh University, Egypt)
- W. Abd-Elhameed (University of Jeddah, Egypt)
- A.G. Atta (Ain Shams University, Egypt)