Dongsheng Yan2025-05-222025-05-222023jz000180-0090https://tustorage.ulb.tu-darmstadt.de/handle/tustorage/37728600Measurement and Comparison of the Innovation Spatial Spillover Effect: A Study Based on the Yangtze River Delta and the Pearl River Delta, ChinaArticlehttps://doi.org/10.3390/systems11020090