CHUKOVA, O.; NEDILKO, S. Structure of Centers of Matrix Emission of the Undoped and RE-Doped Scheelite-Type Lead Tungstate Crystals. Ukrainian Journal of Physics, [S. l.], v. 64, n. 9, p. 837, 2019. DOI: 10.15407/ujpe64.9.837. Disponível em: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019449. Acesso em: 7 may. 2024.