POPOVYCH, O.; VASHULENKO, O.; Kostrіtsia O. Changes in the Age of Maximum Productivity of Researchers in the 21st Century. Science and Innovation, Ukraine, v. 17, n. 6, p. 41–49, 2021. DOI: 10.15407/scine17.06.041. Disponível em: https://scinn-eng.org.ua/ojs/index.php/ni/article/view/65. Acesso em: 6 may. 2026.