Endar Kumalasari. Technical Efficiency and Downstreaming in Indonesia’s Basic Metal Industry: A Stochastic Frontier Analysis Approach. JE [Internet]. 2026 Jul. 30 [cited 2026 Aug. 5];5(7):4175-86. Available from: https://ejournal.45mataram.ac.id/index.php/economina/article/view/3228