SIVAKUMAR, P. Sethuraman; NEDUNCHEZHIYAN, M.; ADHIGURU, P.; JATA, S. K. Estimation of Farmers’ Willingness-to-Pay for Quality Planting Material of Greater Yam (Dioscorea alata L.). Indian Journal of Extension Education, India, v. 58, n. 2, p. 135–139, 2022. DOI: 10.48165/. Disponível em: https://epubs.icar.org.in/index.php/IJEE/article/view/122596. Acesso em: 22 oct. 2025.