Parkhomenko, Pavlo, Michael Lavruk, Ivan Tkach, Oleksandr Demenev, and Lesia Skurinevska. “Problems Pricing for Defense Products and Solutions”. Social Development and Security 10, no. 3 (June 28, 2020): 75-92. Accessed September 22, 2025. https://paperssds.eu/index.php/JSPSDS/article/view/210.