Integrating Nighttime Lights with Multisource Geospatial Indicators for County-Level GDP Spatialization: A Geographically Weighted Regression Approach in Mountainous Sichuan, China. - Sha, Yingchao; Yang, Bin; Zhuo, Sijie; Gu, Xinchen; Yuan, Tao; Zhou, Ziyi; Jiang, Pan (Applied Sciences (2076-3417), 2026)