Tvrdoň, Michal, and Karel Skokan. “Regional Disparities and the Ways of Their Measurement: The Case of the Visegrad Four Countries”. Technological and Economic Development of Economy 17, no. 3 (October 4, 2011): 501-518. Accessed November 2, 2024. https://tede.vgtu.lt/index.php/TEDE/article/view/5341.