1. Institute of Civil Engineering; University of the Philippines Diliman; Quezon City Philippines
2. Department of Biotechnology, Chemistry and Environmental Engineering, Environmental Engineering Section; Aalborg University; Aalborg Denmark
3. Department of Soil, Water and Environmental Science; University of Arizona; Tucson Arizona USA
4. Department of Hydrology and Water Resources; University of Arizona; Tucson Arizona USA
5. Graduate School of Science and Engineering; Saitama University; Saitama Japan
6. Institute of Environmental Science and Technology; Saitama University; Saitama Japan
7. Department of Agroecology and Environment; Aarhus University; Tjele Denmark