BREUNING MADSEN, Henrik. H. van Keulen and J. Wolf: Modelling of agricultural production: weather, soils and crops. Geografisk Tidsskrift, [S. l.], v. 87, 1987. Disponível em: https://tidsskrift.dk/geografisktidsskrift/article/view/44490. Acesso em: 2 mar. 2026.