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Haiwen, Shu; Lin, Duanmu; Xiangli, Li; Yingxin, Zhu . (2009). [IEEE 2009 International Conference on Energy and Environment Technology - Guilin, China (2009.10.16-2009.10.18)] 2009 International Conference on Energy and Environment Technology - Energy-Saving Potential of Seawater-Source Heat Pump District Heating System over Boiler-House District Heating System. , (), 121–124. doi:10.1109/iceet.2009.36 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research