GIROH, D. Y.; NACHANDIYA, N. Technical efficiency and profitability of small holder natural rubber production in southern Nigeria. Journal of Plantation Crops, [S. l.], v. 50, n. 1, p. 8–19, 2022. DOI: 10.25081/jpc.2022.v50.i1.7546. Disponível em: https://www.updatepublishing.com/journal/index.php/JPC/article/view/7546. Acesso em: 23 sep. 2025.