Assessing energy efficiency of Indian paper industry and influencing factors: a slack-based firm-level analysis Energy Econ, 81 (2019), pp. 454-464 https://doi.org/https://doi.org/10.1016/j.eneco.2019.04.027 View in ScopusGoogle Scholar [85] S. Griffiths, B.K. Sovacool, J. Kim, M....