حسن ن. الدوال الداعمة في فضاء هيلبرت. Latakia University Journal -Basic Sciences Series, [S. l.], v. 38, n. 2, 2017. Disponível em: https://journal.tishreen.edu.sy/index.php/bassnc/article/view/2539. Acesso em: 9 apr. 2025.