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[3] Ramos, H.M., Vieira, F. and Covas, D. (2010) Energy Efficiency in a Water Supply System. Water Science and Engineering, 3, 331-340.
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[5] Ramos, H.M., Kenov, K.N. and Vieira, F. (2011) Environmentally Friendly Hybrid Solutions to Improve the Energy and Hydraulic Efficiency in Water Supply Systems. Energy for Sustainable Development, 15, 436-442.
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