Darahan, Valerii, Oleksii Boiko, Viktoriia Rohalska, Olena Soldatenko, and Valerii Lytvynov. 2021. “Structural-Functional Providing of the Operative-Investigative Crime Prevention in the Field of Public Procurement in Ukraine”. Amazonia Investiga 10 (42), 80-92. https://doi.org/10.34069/AI/2021.42.06.8.