KHUMBO THINDWA; NELSON DZUPIRE. Pricing Rainfall Derivatives Based on a Hidden Markov Model to Mitigate Poor Yield. African Journal of Education,Science and Technology (AJEST), [S. l.], v. 8, n. 3, p. 30–44, 2025. Disponível em: https://ajest.org/index.php/ajest/article/view/862. Acesso em: 13 jun. 2026.