Identity and Exchangeable of Figure and Background Visually. Journal of University of Babylon for Engineering Sciences, [S. l.], v. 27, n. 1, p. 290–311, 2019. DOI: 10.29196/jubes.v27i1.1996. Disponível em: https://journalofbabylon.com/index.php/JUBES/article/view/1996. Acesso em: 16 apr. 2025.