Optimally Coordinated Expansion Planning of Coupled Electricity, Heat and Natural Gas Infrastructure for Multi-Energy System Fan, Hong ; Yuan, Qianqian ; Xia, Shiwei ; Lu, Jiayang ; Li, Zuyi Abstract Publication: IEEE Access Pub Date: 2020 DOI: 10.1109/ACCESS.2020.2993035 Bibcode: 2020IEEEA...891139F