Damayanti, Yusma, et al. “Technical Efficiency Analysis of Fertilizer Use for Oil Palm Plantations Self-Help Patterns in Muaro Jambi Regency Using Methods Data Envelopment Analysis.” International Journal of Horticulture, Agriculture and Food Science, vol. 7, no. 1, 2023, pp. 8–14. Crossref, https://doi.org/10.22161/ijhaf.7.1.2.