GRETA, Maria; LEWANDOWSKI, Krzysztof. The Theoretical Analysis of Factors Stimulating Cross-Border Cooperation between Regions. Comparative Economic Research. Central and Eastern Europe, Poland, v. 8, n. 1-2, p. 159–183, 2005. DOI: 10.18778/1508-2008.8.10. Disponível em: https://czasopisma.uni.lodz.pl/CER/article/view/30149. Acesso em: 23 aug. 2026.