OSOVETSKIY, B.M. Ta-Nb AND TR-MINERALIZATION IN MESOZOIC-CENOZOIC SEDIMENTS OF THE UPPER KAMA BASIN AND PERSPECTIVES OF EXPANDING AND DEVELOPMENT OF MINERAL RESOURCES IN THE REGION. Perm Federal Research Centre Journal, [S. l.], n. 3, p. 96–108, 2014. Disponível em: https://journal-dev.icmm.ru/index.php/pscj/article/view/PSCJ2013n3p9. Acesso em: 13 may. 2026.