1. BIAN Zheng-fu, ZHANG Guo-liang, 1994. Theory and method of land refarm engineering in coalfield[J]. Regional Research and Development, 13(1): 6–9. (in Chinese)
2. CHEN Yong-qi, 2000. Practice on land refarming by spoil in subsidence land in coalfield[J]. Coal Mine Environmental Protection, 14(2): 25–27. (in Chinese)
3. LIU Jin-hui, 2000. Planning and designing on ecological engineering in subsidence area caused by coal cutting[J]. Mine Surveying, (1): 44–45, 27. (in Chinese)
4. MA Feng-hai, 1999. The characteristics of land subsidence caused by coal cutting and its resolve passes[J]. Coal Mine Environmental Protection, 13(4): 46–47. (in Chinese)
5. QIAN Yi, WANG Yun-gang, 1993. Present situation of subsidence area caused by coal cutting and its ecological development[J]. Coal Mine Environmental Protection, 7(2): 32–37. (in Chinese)