S. Wölfl, A. Cohn, J. Renz, and G. Sutcliffe. QSTRLib: A Benchmark Problem Repository for Qualitative Spatial and Temporal Reasoning, volume 10412 of Dagstuhl Seminar Proceedings, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, Germany, (2010)
S. Wölfl, and T. Mossakowski. Conference on Spatial Information Theory, volume 3693 of Lecture Notes in Computer Science, page 200-217. Springer; Berlin, (2005)