Liang LengFengyan WangMingchang WangGuodong YangXuefeng NiuXuqing Zhang2025-05-142025-05-142022jz000147-0214https://tustorage.ulb.tu-darmstadt.de/handle/tustorage/24044550A Generalized 9-Intersection Model for Topological Relations between Regions with HolesArticlehttps://doi.org/10.3390/ijgi11040218