Research on agglomeration measurement and structure optimization of energy saving and environmental protection industry in China
BIN Hou,,MA Quan-cheng,WANG Huan-fang,ZHANG Wei-kang,HU Qin-fang
Journal of Shenyang University of Technology . 2020, (6): 498 -505 .  DOI: 10.7688/j.issn.1674-0823.2020.06.04