Measuring and optimizing urban expansion efficiency in the Central Plains Urban Agglomeration: Based on green total factor productivity and two-stage network DEA model
Ren Weizhen, Qiao Jiajun, Zhang Zilong, Wan Shilong
GEOGRAPHICAL SCIENCE . 2026, (11): 2575 -2586 .  DOI: 10.13249/j.cnki.sgs.20250956