RT Journal T1 Inter-Region Transportation Costs, Regional Economic Growth, and Disparities in China A1 Zhaomin Zhang PB Front. Econ. China FD 2020-06-15 YR 2020 JF Frontiers of Economics in China JO Front. Econ. China VO 15 IS 2 SP 282 DO 10.3868/s060-011-020-0013-0 K1 inter-region transportation costs;regional economic growth;growth differentials;panel data LK {https://journal.hep.com.cn/fec/EN/article/article_27738.shtml}