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Smalling, R., & Enright, J. (2015). A Crusade on HSP Amber High Mast Yields Green with Plasma. Energy Engr., 112(5), 12–17.
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van Schalkwyk, I., Venkataraman, N., Shankar, V., Milton, J., Bailey, T., & Calais, K. (2016). Evaluation of the Safety Performance of Continuous Mainline Roadway Lighting on Freeway Segments in Washington State. WSDOT Research Report. Washington State Department of Transportation.
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