KHADJIEV, D.; ÖREN, İdris. Projective and projective-permutation invariants for a point shape recognition . International Journal of Maps in Mathematics, [S. l.], v. 7, n. 2, p. 207–216, 2024. Disponível em: https://www.simadp.com/journalmim/article/view/7-2-5. Acesso em: 1 may. 2025.