M. Egenhofer and D. Wilmsen, Changes in Topological Relations with Splitting and Merging Regions, in: A. Riedl, W. Kainz, and G. Elmes (eds.), Progress in Spatial Data Handling — 12th International Symposium on Spatial Data Handling, Springer, pp. 339-352. Abstract This paper addresses changes in topological relations as they occur when splitting a region into two. read more Changes in Topological Relations when Splitting and Merging Regions