Global Modelling of Food and Agriculture. The Pakistan Development Review, [S. l.], v. 19, n. 3, p. pp.159–180, 1980. DOI: 10.30541/v19i3pp.159-180. Disponível em: https://www.thepdr.pk/index.php/pdr/article/view/546. Acesso em: 6 dec. 2025.