BECK, Joachim. Cross-Border Cooperation: Challenges and Perspectives for the Horizontal Dimension of European Integration. Administrative Consulting, [S. l.], n. 3, p. 14–21, 2018. DOI: 10.22394/1726-1139-2018-3-14-21. Disponível em: https://administrative-consulting.owebs.ru/article/view/13530. Acesso em: 8 nov. 2026.