@TechReport{	  mantel.ea:a-framework-for-connection-calculi:1997,
  author	= {Heiko Mantel and Enno Sandner},
  institution	= {Knowledge Representation and Reasoning Group, Artificial
		  Intelligence Institute, Computer Science Departement,
		  Dresden University of Technology},
  pdf		= {https://www.mais.informatik.tu-darmstadt.de/WebBib/papers/1997/1997-wv-1997-09.pdf},
  ps		= {https://www.mais.informatik.tu-darmstadt.de/WebBib/papers/1997/1997-wv-1997-09.ps.zip},
  title		= {{A Framework for Connection Calculi}},
  year		= 1997
}