Technical Efficiency and its Determinants in Smallholder Tea Production: Evidence from Nyamira and Bomet counties in Kenya. Global Journal of Science Frontier Research, [S. l.], v. 18, n. D3, p. 43–54, 2018. Disponível em: https://www.journalofscience.org/index.php/GJSFR/article/view/2229. Acesso em: 5 feb. 2026.