1. LRMGCE, Ecole Nationale Polytechnique , Algiers, Algeria
2. Radar Department, Terrasigna , Bucharest, Romania
3. Soil Mechanics and Foundation Engineering Department, Technical University of Civil Engineering Bucharest , Bucharest, Romania
4. Groundwater Resource Assessment Department, National Institute of Hydrology and Water Management , Bucharest, Romania
5. Department of Hydraulics and Environment Protection, Technical University of Civil Engineering Bucharest , Bucharest, Romania
6. ESTEC, European Space Agency , Noordwijk, The Netherlands