Chengming XW. TRADE EFFICIENCY AND PROSPECTS: A STOCHASTIC FRONTIER GRAVITY MODEL OF CHINA’S TIMBER EXPORTS TO RCEP NATIONS. CJBER [Internet]. 2023 Oct. 19 [cited 2025 Jul. 5];6(5):1-7. Available from: https://zapjournals.com/Journals/index.php/cjber/article/view/1178