Disheng YiJing YangJingjing LiuYusi LiuJing Zhang2025-05-142025-05-142019jz000156-0547https://tustorage.ulb.tu-darmstadt.de/handle/tustorage/29476550Quantitative Identification of Urban Functions with Fishers’ Exact Test and POI Data Applied in Classifying Urban Districts: A Case Study within the Sixth Ring Road in BeijingArticlehttps://doi.org/10.3390/ijgi8120555