P. Fernández Sánchez, E. R. García, and N. Saravia Molina, “A remark on the Tjurina and Milnor numbers of a foliation of second type”, ProMath, vol. 32, no. 63, pp. 11–22, Aug. 2022, Accessed: Oct. 28, 2026. Available: https://revistas.pucp.edu.pe/index.php/promathematica/article/view/25727