“Geo-Demographic Typology of Municipalities of the Kaliningrad Region”, Mediterr. J. Soc. Sci., vol. 6, no. 6 S7, p. 345, Dec. 2015, Accessed: Apr. 29, 2024. [Online]. Available: https://www.richtmann.org/journal/index.php/mjss/article/view/8802