South East Europe: Trade Liberalization, Economic Integration, Quality, Security and Guarantee of Products and Services. Mediterranean Journal of Social Sciences, [S. l.], v. 4, n. 9, p. 494, 2013. Disponível em: https://www.richtmann.org/journal/index.php/mjss/article/view/1104.. Acesso em: 5 may. 2024.