OVCHERENKO, S. S.; SILAGADZE, Z. K. Comment on Perihelion Advance due to Cosmological Constant. Ukrainian Journal of Physics, [S. l.], v. 61, n. 4, p. 342, 2019. DOI: 10.15407/ujpe61.04.0342. Disponível em: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019097. Acesso em: 14 aug. 2022.