Articles by Gang Zeng
 
ORIGINAL RESEARCH

A Five-Stage DEA Model for Technological Innovation Efficiency of China’s Strategic Emerging Industries, Considering Environmental Factors and Statistical Errors
Gang Zeng, Haixia Guo, Chengxuan Geng
Pol. J. Environ. Stud. 2021;30(1):927–941
DOI: https://doi.org/10.15244/pjoes/123287
 
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ORIGINAL RESEARCH

Spatial Spillover Effect of Strategic Eemerging Industry Agglomeration and Green Economic Efficiency in China
Gang Zeng, Chengxuan Geng, Haixia Guo
Pol. J. Environ. Stud. 2020;29(5):3901–3914
DOI: https://doi.org/10.15244/pjoes/116443
 
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ISSN:1230-1485
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