HAKK, E.; NADA, A.; TAWFIK, A.; YASSIN, H. Impacts of Viscous Matter and Radiation on the Temporal Evolution of the Universe. Ukrainian Journal of Physics, [S. l.], v. 67, n. 6, p. 448, 2022. DOI: 10.15407/ujpe67.6.448. Disponível em: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2021002. Acesso em: 29 nov. 2022.