STACK, M. M.; PENTECOST , E. J.; RAVISHANKAR, G. Stochastic Frontier Analysis of Trade Efficiency for the New EU Member States: Implications of Brexit. Economic Issues, [S. l.], v. 23, n. 1, p. 35–53, 2018. Disponível em: https://mail.economicissues.org.uk/index.php/EI_OJS/article/view/292. Acesso em: 18 sep. 2026.