1. PDHengineer, Cooling Towers, viewed: 15th June 2013, Retrieved from: www.pdhengineer.com/courses/m/M-7002.pdf.
2. Hybrid Cooling Systems for Low-Temperature Geothermal Power Production;Ashwood,2011
3. Assessment of Evaporative Cooling Enhancement Methods for Air-cooled Geothermal Power Plants;Kutscher,2002