L. KHOKHLOV, D. Gravitation near the Schwarzschild radius. International Journal of Advanced Astronomy, [S. l.], v. 9, n. 1, p. 28–31, 2021. DOI: 10.14419/ijaa.v9i1.31444. Disponível em: https://sciencepubco.com/index.php/IJAA/article/view/31444.. Acesso em: 3 may. 2024.