م.م. علي مصدق دلفي-أ.م. د. سلوى سلمان عبد. Invariant S-best Coapproximation in 2-normed Spaces. Mustansiriyah Journal for Sciences and Education, [S. l.], v. 18, n. 3, p. 111–120, 2026. Disponível em: https://edumag.uomustansiriyah.edu.iq/index.php/mjse/article/view/1378. Acesso em: 9 nov. 2026.