SIMATUPANG, J.; NABABAN, M. B. P. Technical Efficiency of Irrigated and Rain-fed Rice Farms in North Sumatra, Indonesia. International Journal of Multidisciplinary Approach Research and Science, [S. l.], v. 1, n. 03, p. 464–480, 2023. DOI: 10.59653/ijmars.v1i03.233. Disponível em: https://risetpress.com/index.php/ijmars/article/view/233. Acesso em: 22 jul. 2025.