Patent Insurance and Innovation Level：A Perspective Based on Regional Spatial Heterogeneity
Linyi Qian, Feng Chen, Zihan Liu, Xiangfei Zhang
J. East China Norm. Univ. Philos. Soc. Sci . 2025, (3): 163 -176 .  DOI: 10.16382/j.cnki.1000-5579.2025.03.015