1. Ahlrichs U, Fischer J, Denzler J, Drexler C, Niemann H, Noth E, Paulus D (1999) Knowledge based image and speech analysis for service robots. In: Proceedings of the integration of speech and image understanding, pp 21–47
2. Anderson JR, Bower GH (1980) Human associative memory: a brief edition. Lawrence Erlbaum Associates, Publishers, Hillsdale, New Jersey
3. Baader F, Calvanese D, McGuinness DL, Nardi D, Patel-Schneider PF (2010) The description logic handbook: theory, implementation, and applications. Cambridge University Press, Cambridge
4. Becker J, Bersch C, Pangercic D, Pitzer B, Rühr T, Sankaran B, Sturm J, Stachniss C, Beetz M, Burgard W (2011) The pr2 workshop-mobile manipulation of kitchen containers. In: IROS workshop on results, challenges and lessons learned in advancing robots with a common platform, vol 120
5. Brachman RJ, Schmolze JG (1985) An overview of the kl-one knowledge representation system. Cognit Sci 9(2):171–216