Yukhno, O. O. “Problems of Improving Legal Regulation of Operative and Search Activity and Its Concurrence With Criminal Procedural Legislation of Ukraine”. Bulletin of Kharkiv National University of Internal Affairs, Vol. 74, no. 3, Dec. 2018, pp. 159-67, http://visnyk.univd.edu.ua/index.php/VNUAF/article/view/120.