SALIMA MOHAMED KHADER; SANAA AHMED ALSHHOMI. Van Kampen Diagrams and Pictures: Definitions, Operations, and Conversions. African Journal of Advanced Pure and Applied Sciences (AJAPAS), [S. l.], v. 4, n. 3, p. 272–284, 2025. Disponível em: https://aaasjournals.com/index.php/ajapas/article/view/1384. Acesso em: 5 dec. 2025.