Use of Frequency Response Metrics to Assess the Planning and Operating Requirements for Reliable Integration of Variable Renewable Generation. 2010. LBNL-4142E..
"Dynamic Simulation Study of the Frequency Response of the Western Interconnection with Increased Wind Generation." 2013 46th Hawaii International Conference on System Sciences (HICSS). Wailea, HI, USA: IEEE, 2013. 2222 - 2229..