Decentralized Time Geography for Ad-Hoc Collaborative Planning. - Martin Raubal; Stephan Winter 001; Christopher H. Dorr (COSIT, 2009)

LocalAlert: Simulating Decentralized Ad-Hoc Collaboration in Emergency Situations. - Silvia Nittel; Christopher H. Dorr; John C. Whittier (GIScience, 2012)

Qualitative shape representation based on the qualitative relative direction and distance calculus eOPRAm. - Christopher H. Dorr; Reinhard Moratz (CoRR, 2014)

Shape Similarity Based on the Qualitative Spatial Reasoning Calculus eOPRAm. - Christopher H. Dorr; Longin Jan Latecki; Reinhard Moratz (COSIT, 2015)

Towards Applying the OPRA Theory to Shape Similarity. - Christopher H. Dorr; Reinhard Moratz (CoRR, 2017)