- Mastering Left and Right - Different Approaches to a Problem That Is Not Straight Forward. - André van Delden; Till Mossakowski (KI, 2013)

Quality in Quantity - Relative Direction Constraints using Sector Sets around Oriented Points. - André van Delden (ECAI, 2014)

Crossing the Boundary - Two Benchmarks for Qualitative Spatial Reasoning Bridging Relative Directions and Mereotopology. - André van Delden; Reinhard Moratz (Spatial Cognition, 2014)

A Survey of Qualitative Spatial and Temporal Calculi: Algebraic and Computational Properties. - Frank Dylla; Jae Hee Lee 001; Till Mossakowski; Thomas Schneider 002; André van Delden; Jasper van de Ven; Diedrich Wolter (ACM Comput. Surv., 2017)