Perfect Fluid Coupled String Universe in f(R,T) Gravity. Journal of Scientific Research, [S. l.], v. 15, n. 3, p. 695–704, 2023. DOI: 10.3329/jsr.v15i3.64173. Disponível em: https://www.banglajol.info/index.php/JSR/article/view/64173. Acesso em: 7 jul. 2026.