Regional Integration in South Asia: An Analysis of Trade Flows Using the Gravity Model. The Pakistan Development Review, [S. l.], v. 49, n. 2, p. pp.105–118, 2022. DOI: 10.30541/v49i2pp.105-118. Disponível em: https://thepdr.pk/index.php/pdr/article/view/2387. Acesso em: 9 jun. 2025.