T. Kudłacz and D. Woźniak, “Will Convergence or Polarization Characterise Poland’s Regional Development to 2020, in the Light of the Projection of the Hermin Model?”, PG, vol. 7, no. 1, pp. 19–32, Jun. 2009, Accessed: Jul. 03, 2024. [Online]. Available: https://publicgovernance.pl/zpub/article/view/116