1. National Energy Administration. 2019. Plan of Developing Clean-Energy Vehicles (2012-2020). http://www.nea.gov.cn/2012-07/10/c_131705726.htm. National Energy Administration. 2019. Plan of Developing Clean-Energy Vehicles (2012-2020). http://www.nea.gov.cn/2012-07/10/c_131705726.htm.
2. U.S. Energy Information Administration. 2019. International Energy Outlook 2017. https://www.eia.gov/outlooks/ieo/. U.S. Energy Information Administration. 2019. International Energy Outlook 2017. https://www.eia.gov/outlooks/ieo/.
3. Voronoi diagrams—a survey of a fundamental geometric data structure
4. Intent to purchase a plug-in electric vehicle: A survey of early impressions in large US cites
5. Zhao Chen Peng Cheng Yuxiang Zeng and Lei Chen. 2019. Minimizing Maximum Delay of Task Assignment in Spatial Crowdsourcing. In ICDE. 1454--1465. Zhao Chen Peng Cheng Yuxiang Zeng and Lei Chen. 2019. Minimizing Maximum Delay of Task Assignment in Spatial Crowdsourcing. In ICDE. 1454--1465.