1. Faculty of Economics, Damascus University, Damascus, Syrian Arab Republic
2. Danubius University, Galati, Romania
3. College of Agriculture Rewa, Jawaharlal Nehru Krishi Vishwavidyalaya (JNKVV), Jabalpur, India
4. Universiti Putra Malaysia, Serdang, Selangor, Malaysia
5. “Dunarea de Jos” University of Galati, Galati, Romania