Modelling Crop Insurance Based on Weather Index Using The Homotopy Analysis for American Put Option. Jurnal Varian, [S. l.], v. 4, n. 2, p. 117–124, 2021. DOI: 10.30812/varian.v4i2.993. Disponível em: https://journal.universitasbumigora.ac.id/Varian/article/view/993. Acesso em: 1 jul. 2025.