Harkavtsev, Ye. I., and M. O. Koteliukh. “Optimisation and Improvement of Police officers’ Special Rank Types”. Bulletin of Kharkiv National University of Internal Affairs 105, no. 2 (Part 1) (June 29, 2024): 229-239. Accessed August 24, 2024. https://visnyk.univd.edu.ua/index.php/VNUAF/article/view/744.