1. Frohm, J. et al.: Levels of automation in manufacturing. Ergonomia Int. J. Ergonomics Hum. Factors 30, 3–28 (2008)
2. Malik, A.A., Bilberg, A.: Framework to implement collaborative robots in manual assembly: a lean automation approach. In: Katalinic, B. (ed.) Proceedings of the 28th DAAAM International Symposium, pp. 1726–9679. DAAAM International, Vienna (2017)
3. Peshkin, M., Colgate, J.E.: Cobots. Ind. Robots Int. J. 26(5), 335–341 (1996)
4. Fasth, Å., et al.: Measuring and analysing Levels of Automation in an assembly system. In: Mitsuishi, M., Ueda, K., Kimura, F. (eds.) Manufacturing Systems and Technologies for the New Frontier, pp. 169–172. Springer, London (2008)
5. Fitts, P.M. et al.: Human engineering for an effective air-navigation and traffic-control system, and appendixes 1 thru 3. 1951