[[1] Liao N., He Y. Exploring the effects of influencing factors on energy efficiency in industrial sector using cluster analysis and panel regression model. Energy 2018:158:782–795. https://doi.org/10.1016/j.energy.2018.06.04910.1016/j.energy.2018.06.049]Search in Google Scholar
[[2] Trotta G. Assessing energy efficiency improvements and related energy security and climate benefits in Finland: An ex post multi-sectoral decomposition analysis. Energy Economics 2020:86:104640. https://doi.org/10.1016/j.eneco.2019.10464010.1016/j.eneco.2019.104640]Search in Google Scholar
[[3] Krajnc D., Glavič P. How to compare companies on relevant dimensions of sustainability. Ecological Economics 2005:55(4):551–563. https://doi.org/10.1016/j.ecolecon.2004.12.01110.1016/j.ecolecon.2004.12.011]Search in Google Scholar
[[4] Barrera-Roldán A., Saldívar-Valdés A. Proposal and application of a Sustainable Development Index. Ecological Indicators 2002:2(3):251–256. https://doi.org/10.1016/S1470-160X(02)00058-410.1016/S1470-160X(02)00058-4]Search in Google Scholar
[[5] Lemke C., Bastini K. Embracing multiple perspectives of sustainable development in a composite measure: The Multilevel Sustainable Development Index. Journal of Cleaner Production 2020:246:118884. https://doi.org/10.1016/j.jclepro.2019.11888410.1016/j.jclepro.2019.118884]Search in Google Scholar
[[6] Mazziotta M., Pareto A. Methods for Constructing Composite Indices: One for All or All for One? RIEDS – Rivista Italiana di Economia Demografia e Statistica 2013:67(2):67–80.]Search in Google Scholar
[[7] Razmjoo A. A., Sumper A., Davarpanah A. Development of sustainable energy indexes by the utilization of new indicators: A comparative study. Energy Reports 2019:5:375–383. https://doi.org/10.1016/j.egyr.2019.03.00610.1016/j.egyr.2019.03.006]Search in Google Scholar
[[8] Park M. S., et al. Eco-innovation indices as tools for measuring eco-innovation. Sustainability 2017:9(12):2206. https://doi.org/10.3390/su912220610.3390/su9122206]Search in Google Scholar
[[9] European Commission. NACE Rev. 2 – Statistical classification of economic activites in the European Community. Luxembourg: Office for Official Publications of the European Communities, 2008.]Search in Google Scholar
[[10] Krajnc D., Glavič P. A model for integrated assessment of sustainable development. Resource Conservation and Recyclyng 2005:43(2):189–208. https://doi.org/10.1016/j.resconrec.2004.06.00210.1016/j.resconrec.2004.06.002]Search in Google Scholar
[[11] Cîrstea S. D., et al. Evaluating renewable energy sustainability by composite index. Sustainability 2018:10(3):811. https://doi.org/10.3390/su1003081110.3390/su10030811]Search in Google Scholar
[[12] Marques, A. C., Fuinhas, J. A., and Tomás, C. Energy efficiency and sustainable growth in industrial sectors in European Union countries: A nonlinear ARDL approach. Journal of Cleaner Production 2019:239:118045. https://doi.org/10.1016/j.jclepro.2019.11804510.1016/j.jclepro.2019.118045]Search in Google Scholar
[[13] Abdollahi, H. Investigating Energy Use, Environment Pollution, and Economic Growth in Developing Countries. Environ. Clim. Technol. 2020:24(1):275–293. https://doi.org/10.2478/rtuect-2020-001610.2478/rtuect-2020-0016]Search in Google Scholar
[[14] Trianni, A., Cagno, E., & Neri, A. Modelling barriers to the adoption of industrial sustainability measures. J. Clean. Prod. 2017:168:1482–1504. https://doi.org/10.1016/j.jclepro.2017.07.24410.1016/j.jclepro.2017.07.244]Search in Google Scholar
[[15] Pérez K., González-Araya M. C., Iriarte A. Energy and GHG emission efficiency in the Chilean manufacturing industry: Sectoral and regional analysis by DEA and Malmquist indexes. Energy Economics 2017:66:290–302. https://doi.org/10.1016/j.eneco.2017.05.02210.1016/j.eneco.2017.05.022]Search in Google Scholar
[[16] Sutthichaimethee P., Ariyasajjakorn D. Forecast of Carbon Dioxide Emissions from Energy Consumption in Industry Sectors in Thailand. Environmental and Climate Technologies 2018:22(1):107–117. https://doi.org/10.2478/rtuect-2018-000710.2478/rtuect-2018-0007]Search in Google Scholar
[[17] Harik R., et al. Towards a holistic sustainability index for measuring sustainability of manufacturing companies. International Journal of Production Research 2015:53(13):4117–4139. https://doi.org/10.1080/00207543.2014.99377310.1080/00207543.2014.993773]Search in Google Scholar
[[18] Eurostat. Annual detailed enterprise statistics for industry (NACE Rev. 2, B-E) [Online]. [Accessed: 10.02.2020]. Available: https://appsso.eurostat.ec.europa.eu/nui/show.do?dataset=sbs_na_ind_r2&lang=en]Search in Google Scholar
[[19] Eurostat. Key indicators of physical energy flow accounts by NACE Rev. 2 activity [Online]. [Accessed: 10.02.2020]. Available: https://appsso.eurostat.ec.europa.eu/nui/show.do?dataset=env_ac_pefa04&lang=en]Search in Google Scholar
[[20] Central Statistics Bureau of Latvia. Entrepreneurship indicators of enterprises (SBG010) [Online]. [Accessed: 10.02.2020]. Availeble: http://data1.csb.gov.lv/pxweb/en/uzn/uzn__uzndarb/SBG010.px]Search in Google Scholar
[[21] Eurostat. Environmental taxes by economic activity (NACE Rev. 2) [Online]. [Accessed: 02.10.2020]. Available: https://appsso.eurostat.ec.europa.eu/nui/show.do?dataset=env_ac_taxind2&lang=en]Search in Google Scholar
[[22] International Organization for Standardization. The ISO Survey of certifications to management system standards - Full results. Geneva: ISO, 2018.]Search in Google Scholar
[[23] Eurostat. Industry by employment size class (NACE Rev. 2, B-E) [Online]. [Accessed: 17.02.2020]. Available: https://appsso.eurostat.ec.europa.eu/nui/show.do?dataset=sbs_sc_ind_r2&lang=en]Search in Google Scholar
[[24] Eurostat. Air emissions accounts by NACE Rev. 2 activity [Online]. [Accesed 02.04.2020]. Available: https://appsso.eurostat.ec.europa.eu/nui/show.do?dataset=env_ac_ainah_r2&lang=en]Search in Google Scholar
[[25] Eurostat. Energy supply and use by NACE Rev. 2 activity [Online]. [Accessed 02.03.2020]. Available: https://appsso.eurostat.ec.europa.eu/nui/show.do?dataset=env_ac_pefasu&lang=en]Search in Google Scholar
[[26] Eurostat. Environmental benefits due to innovation in the enterprises by NACE Rev. 2 activity and size class [Online]. [Accessed 02.03.2020]. Available: https://appsso.eurostat.ec.europa.eu/nui/show.do?dataset=inn_cis9_env&lang=en]Search in Google Scholar
[[27] Locmelis K., Bariss U., Blumberga D. Energy Efficiency Obligations and Subsidies to Energy Intensive Industries in Latvia. Environmental and Climate Technologies 2019:23(2):90–101. https://doi.org/10.2478/rtuect-2019-005710.2478/rtuect-2019-0057]Search in Google Scholar
[[28] Zuberi M. J. S., et al. A detailed review on current status of energy efficiency improvement in the Swiss industry sector. Energy Policy 2019:137:111162. https://doi.org/10.1016/j.enpol.2019.11116210.1016/j.enpol.2019.111162]Search in Google Scholar