Popovych, O.S., and O.P. Kostrytsa. “The Age Structure of R&D Personnel As Factor of Ukraine’s Scientific System Viability”. Science and Innovation 12, no. 2 (August 20, 2024): 5–10. Accessed February 3, 2026. https://nasu-periodicals.org.ua/index.php/science/article/view/6172.