Relative performance of three sweet potato varieties in sole and intercrop systems in Southern Guinea Savanna ecology of Nigeria. Global Journal of Science Frontier Research, [S. l.], v. 12, n. D3, p. 37–43, 2012. Disponível em: https://www.journalofscience.org/index.php/GJSFR/article/view/100212. Acesso em: 6 feb. 2026.