The Invisible Walls: how Freight Transport Costs shape European Internal Trade. 经济学与数据科学, [S. l.], v. 2, n. 2, 2026. DOI: 10.65455/vjtvke47. Disponível em: https://journal.innoviair.cn/index.php/EDS/article/view/89. Acesso em: 4 8月. 2026.