1. Fuelmatics Systems AB, July 5, 2015.
http://fuelmatics.com/
2. RotecEngineering, July 5, 2015.
http://rotec-engineering.nl/en/automation/refueling-robot/
3. GINKO, June 28, 2015.
https://www.tu-chemnitz.de/etit/sse/Forschung/Projekte/ginko.html
4. Whitney, D.E.: Quasi-static-assembly of compliantly supported rigid parts. In: Journal of Dynamic Systems, Measurement and Control Division, pp. 65–77 (1981)
5. Sharma, K., Shirwalkar, V., Pal, P.K.: Intelligent and environment-independent Peg-In-Hole search strategies. In: 2013 International Conference on Control, Automation, Robotics and Embedded Systems (CARE), pp. 1–6, December 16–18, 2013