WALE, Zelalem Teshome. I-Vague Vector Spaces. (IJCSAM) International Journal of Computing Science and Applied Mathematics, [S. l.], v. 6, n. 2, p. 38–41, 2020. Disponível em: https://journal.its.ac.id/index.php/ijcsam/article/view/4561. Acesso em: 30 jan. 2026.