1. Ammon, J.: Hypercube connectivity within ccNUMA architectures. SGI Origin Team, Mountain View, CA (1998)
2. Anderl, R, Picard, A., Wang, Y., Fleischer, J., Dosch, S., Klee, B., Bauer, J.: “Guideline industry 4.0—guiding principles for the implementation of Industry 4.0 in small and medium sized businesses.” In: VDMA Forum Industry 4.0, Frankfurt (2015)
3. Choudhury, N.: World wide web and its journey from web 1.0 to web 4.0. Int. J. Comput. Sc. Inf. Tech. 5(6), 8096–8100 (2014)
4. Coxeter, H.S.M.: Regular Polytopes, 3rd edn. Dover, New York (1973)
5. Helbing, D.: What the digital revolution means to us. Science Business, June 12 (2014)