Neng Wan Zhongliang Deng Guangyong Yang Representation and Reasoning of Topological Relations Between Enclave and Exclave Regions. 301-311 2016 ICCSA (5) https://doi.org/10.1007/978-3-319-42092-9_23 conf/iccsa/2016-5 db/conf/iccsa/iccsa2016-5.html#WanDY16