FRW Viscous Fluid cosmological Model in f(R,T) Gravity. Global Journal of Science Frontier Research, [S. l.], v. 13, n. A3, p. 55–57, 2013. Disponível em: https://journalofscience.org/index.php/GJSFR/article/view/801. Acesso em: 10 jun. 2026.