Vojtková, Mária, and Eva Sodomová. “Classification of EU Countries According to Selected Indicators from the Field of Business Demography Using Self-Organising Maps”. Krakow Review of Economics and Management/Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie, no. 11(947) (May 11, 2016): 37–52. Accessed September 20, 2024. https://aoc.uek.krakow.pl/index.php/krem/article/view/982.