经济新常态下煤炭企业转型升级探讨
高焕民,魏焕东,李改革
Transformation Upgrading development of Enterprises under Economic New Normal State
GAO Huanmin,WEI Huandong,LI Gaige
煤炭经济研究 . 2015, (4): 22 -25 .  DOI: A