Salamaga, Marcin. “Assessing the Similarity of the Geographical Structure of Foreign Trade in the Countries of the European Union”. Krakow Review of Economics and Management/Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie, no. 12(972) (May 24, 2018): 99–112. Accessed September 20, 2024. https://krem.uek.krakow.pl/index.php/krem/article/view/1365.