AGARWAL, A. . Universal Triangles of Quasi-Partial, Injective, E-Smoothly Parabolic Planes and Advanced Potential Theory. International Journal on Recent Trends in Life Science and Mathematics, [S. l.], v. 7, n. 3, p. 54–61, 2020. Disponível em: https://www.ijlsm.org/index.php/ijlsm/article/view/183. Acesso em: 14 sep. 2025.