Affiliation: | 1Professor of Water Resources Engineering, and Chair, Dept. of Civil and Environmental Engineering, Universidad del Norte, Barranquilla, Colombia. E-mail: havila@uninorte.edu.co 2Cudworth Professor of Urban Water Systems, Department of Civil, Construction, and Environmental Engineering, Univ. of Alabama. Tuscaloosa, AL. 3Associate Professor of Environmental Engineering, School of Science, Engineering and Technology, Penn State Harrisburg, Middletown, PA.
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