GONZÀLEZ, G. A.; GUTIÉRREZ PIÑERES, A. C. Counterrotating Dust Disk Around a Schwarzschild Black Hole: New Fully Integrated Explicit Exact Solution. Revista Integración, temas de matemáticas, [S. l.], v. 26, n. 2, p. 123–130, 2008. Disponível em: https://revistas.uis.edu.co/index.php/revistaintegracion/article/view/209. Acesso em: 2 may. 2024.