Marković, Dejan, Biljana Grgurović, and Slavica Štrbac. “The Use of Spatial Data for Segmentation of the Postal Service Market”. Technological and Economic Development of Economy 17, no. 1 (March 17, 2011): 87-100. Accessed November 2, 2024. https://tede.vgtu.lt/index.php/TEDE/article/view/5301.