Syarifa, L. F. ., Shamsudin, M. N. ., Radam, A. ., Abd. Latif, I. ., & Haris, U. . (2019). Non-Parametric Approach towards Smallholders Rubber Production Efficiency: A Two-Stage Data Envelopment Analysis (DEA). Journal of Asian Scientific Research, 9(2), 10–19. https://doi.org/10.18488/journal.2.2019.92.10.19