He LiuXueming LiSongbo LiShenzhen TianYilu GongYingying GuanHe Sun2025-05-142025-05-14https://tustorage.ulb.tu-darmstadt.de/handle/tustorage/25385550Agglomeration Externalities, Network Externalities and Urban High-Quality Development: A Case Study of Urban Agglomeration in the Middle Reaches of the Yangtze Riverpdf