KALIMUTHU, S. On Friedman equation, quadratic laws and the geometry of our universe. International Journal of Physics Research and Applications, [S. l.], v. 4, n. 1, p. 048–050, 2021. DOI: 10.29328/journal.ijpra.1001041. Disponível em: https://www.physicsresjournal.com/ijpra/article/view/ijpra-aid1041. Acesso em: 25 apr. 2025.