The nature of thermal radiation from the Universe, Hawking radiation and quasar disks as natural masers. Global Journal of Science Frontier Research, [S. l.], v. 24, n. A4, p. 69–74, 2024. Disponível em: https://journalofscience.org/index.php/GJSFR/article/view/102883. Acesso em: 30 jan. 2026.