1. Faculty of Graduate Studies, Birzeit University, P.O. Box 14, Birzeit, West Bank, Ramallah, State of Palestine
2. Institute of Environmental and Water Studies, Birzeit University, P.O. Box 14, Birzeit, West Bank, Ramallah, State of Palestine
3. Civil Engineering Department, An-Najah National University, P.O. Box 7, Nablus, State of Palestine