DUBYNA, O.; KRYVDIK, S.; BELSKYY, V.; Vyshnevskyi О. Features of berillium and rare metal mineralization  in syenite of the Perga deposit (Ukrainian shield). Visnyk of Taras Shevchenko National University of Kyiv. Geology, [S. l.], v. 1, n. 88, p. 92–97, 2020. DOI: 10.17721/1728-2713.88.13. Disponível em: https://geology.bulletin.knu.ua/en/article/view/1187. Acesso em: 11 oct. 2026.