1. Thangaraj, J., Lakshmi Narayanan, R.: Industry 1.0 to 4.0: The Evolution of Smart Factories (2018)
2. Schwab, K.: The fourth industrial revolution, Currency (2017)
3. Krämer, W.: Mittelstandsökonomik: Grundzüge einer umfassenden Analyse kleiner und mittlerer Unternehmen [SME Economics: Principles of a comprehensive analysis of SMEs], München (2003)
4. Lee, J.: Industry 4.0 in big data environment. Ger. Harting Mag. 1, 8–10 (2013)
5. Rüßmann, M., Lorenz, M., Gerbert, P., Waldner, M., Justus, J., Engel, P., Harnisch, M.: Industry 4.0: the future of productivity and growth in manufacturing industries, vol. 9, pp. 54–89. Boston Consulting Group (2015)