DHUNGEL, P. R.; SHARMA, S. K.; KHANAL, U. R. Further investigation of perturbations in FLRW space-time. Scientific World, [S. l.], v. 17, n. 17, p. 1–6, 2024. DOI: 10.3126/sw.v17i17.66413. Disponível em: https://nepjol.info/index.php/SW/article/view/66413. Acesso em: 17 jul. 2024.