PARNOVSKY, S. Dynamics of the General Bianchi IX Model near a Cosmological Singularity. Ukrainian Journal of Physics, [S. l.], v. 67, n. 2, p. 93, 2022. DOI: 10.15407/ujpe67.2.93. Disponível em: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2021382. Acesso em: 20 apr. 2024.