1. ElMaraghy, H., Schuh, G., ElMaraghy, W., et al.: Product variety management. CIRP Ann. Manuf. Technol. 62, 629–652 (2013)
2. Jeschke, S., Brecher, C., Meisen, T., et al.: Industrial internet of things and cyber manufacturing systems. In: Jeschke, S., Brecher, C., Song, H. (eds.) Industrial Internet of Things, pp. 3–19. Springer (2017)
3. Brettel, M., Friederichsen, N., Keller, M., et al.: How virtualization, decentralization and network building change the manufacturing landscape: an industry 4.0 perspective. Inter. J. Mech. Indus. Sci. Eng. 8, 37–44 (2014)
4. Brettel, M., Klein, M., Friederichsen, N.: The relevance of manufacturing flexibility in the context of industry 4.0. Procedia CIRP. 41, 105–110 (2016)
5. Wang, S., Wan, J., Li, D., et al.: Implementing smart factory of industry 4.0: an outlook. Inter. J. Distribut. Sensor Networks. (2016)