K. SHAAKIR, L. .; A. HIJAB, A. On the bi-extended eigenvalues and bi-extended eigenvectors. مجلة المستنصرية للعلوم والتربية, [S. l.], v. 20, n. 3, p. 25–34, 2020. Disponível em: https://edumag.uomustansiriyah.edu.iq/index.php/mjse/article/view/615. Acesso em: 2 2024.