[1]
A. Graven and J. Hubbard, “An elementary proof of Poincaré’s last geometric theorem”, ProMath, vol. 31, no. 62, pp. 61–93, Feb. 2021, Accessed: Oct. 10, 2026. Available: https://revistas.pucp.edu.pe/index.php/promathematica/article/view/23436