1. Herrmann, C., Schmidt, C., Kurle, D., Blume, S., and Thiede, S., “Sustainability in Manufacturing and Factories of the Future,” Int. J. Precis. Eng. Manuf.-Green Tech., Vol. 1, No. 4, pp. 283–292, 2014.
2. Kang, H. S., Lee, J. Y., Choi, S., Kim, H., Park, J. H., et al., “Smart Manufacturing: Past Research, Present Findings, and Future Directions,” Int. J. Precis. Eng. Manuf.-Green Tech., Vol. 3, No. 1, pp. 111–128, 2016.
3. Mercator Institute for China Studies, “Industrie 4.0: Deutsche Technologie für Chinas Industrielle Aufholjagd,” http://www.merics.org/fileadmin/templates/download/china-monitor/China_Monitor_No_23.pdf (Accessed 24 MAR 2017)
4. International Federation of Robotics, “China Robot Boom,” http://www.worldrobotics.org/index.php?id=home&news_id=286 (Accessed 10 AUG 2016)
5. Eurostat, “National Accounts by 10 Branches -Aggregates at Current Prices,” http://appsso.eurostat.ec.europa.eu/nui/show.do?dataset =nama_nace10_c&lang=en (Accessed 23 FEB 2016)