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de Schaetzen, Werner; Hung, Jonathan; Clark, Stephen; Gottfred, Craig; Acosta, Bill; Reynolds, Pat . (2011). [American Society of Civil Engineers 12th Annual Conference on Water Distribution Systems Analysis (WDSA) - Tucson, Arizona, United States (September 12-15, 2010)] Water Distribution Systems Analysis 2010 - How Much Is "Your Un-Calibrated Model" Costing Your Utility? Ten Lessons Learned from Calibrating the CRD Water Model. , (), 1053–1065. doi:10.1061/41203(425)95 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research