“Cost Efficiency of Public Procurement at Local Level: Chances for Improvement of Local Self-Government and Public Enterprises in Serbia”. Lex localis - Journal of Local Self-Government 13, no. 3 (July 31, 2015): 789–807. Accessed December 31, 2025. https://lex-localis.org/index.php/LexLocalis/article/view/13.3.789-807%282015%29.