Mostarac, K., Z. Kavran, and E. Rakić. “Accessibility of Universal Postal Service According to Access Points Density Criteria: Case Study of Bjelovar-Bilogora County, Croatia”. Promet - Traffic&Transportation, Vol. 31, no. 2, Apr. 2019, pp. 173-8, doi:10.7307/ptt.v31i2.3019.