Nicolacopoulos, Ilias, and G. S. Tsouyopoulos. “Structural Aspects of the Network of Greek Cities: A Methodological Note”. The Greek Review of Social Research 26 (January 1, 1976): 54–65. Accessed November 22, 2024. https://ejournals.epublishing.ekt.gr/index.php/ekke/article/view/6870.