@INPROCEEDINGS{Gottfriedn,
  author = {Gottfried, Bj{\"o}rn},
  title = {Reasoning about intervals in two dimensions},
  booktitle = {IEEE Int. Conference on Systems, Man and Cybernetics},
  year = {2004},
  editor = {Thissen, W. and Wieringa, P. and Pantic, M. and Ludema, M.},
  pages = {5324--5332},
  address = {The Hague},
  publisher = {IEEE SMC},
  abstract = {Qualitative reasoning approaches take on the challenge of dealing
	with commonsense knowledge in machines. This is important both to
	provide a means of efficient automatic reasoning and to overcome
	the differences between man and machine. This paper proposes a new
	qualitative representation of spatial knowledge based on interval
	relations. The representation complements existing approaches by
	providing a new set of spatial relations. This allows qualitative
	reasoning about rigid objects, for example, in spatial configuration
	problems or in the context of spatiotemporal interactions between
	objects. The qualitative nature of this representation assists the
	engineering process and makes the behaviour of systems more easily
	comprehensible.},
  owner = {pmania},
  timestamp = {2012.11.06},
  url = {http://www.tzi.de/~bjoerng/Gottfried2004a.pdf}
}