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3. ASCE-EWRI, 2005. The ASCE Standardized Reference Evapotranspiration Equation. Technical Committee Report to the Environmental and Water Resources Institute of the American Society of Civil Engineers from the Task Committee on Standardization of Reference Evapotranspiration. ASCE-EWRI, 1801 Alexander Bell Drive, Reston, VA 20191–4400, 173 pp.
4. ASTM Standard D 5981-96, 1996. Standard Guide for Calibrating a Ground Water Flow Model Application, West Conshohocken, PA.
5. Toward improved calibration of hydrologic models: combining the strengths of manual and automatic methods;Boyle;Water Resour. Res.,2000