Chrzanowska, Mariola, Nina Drejerska, and Iwona Pomianek. “AN ATTEMPT TO DETERMINE THE FUNCTIONAL AREA OF WARSAW WITH THE USE OF THE MEASURE OF RELATIVE DEVELOPMENT LEVEL AND HELLWIG'S MEASURE”. Acta Scientiarum Polonorum. Oeconomia 12, no. 1 (March 30, 2013): 5-15. Accessed December 22, 2024. https://js.wne.sggw.pl/index.php/aspe/article/view/4069.