“KESMALARNING O’LCHAMI SIFATIDA QARALGAN SONLAR USTIDA ARIFMETIK AMALLAR TARIFI VA AMALLAR BAJARISH XOSSALARI”. 2026. Ustozlar Uchun 96 (1): 30-36. https://journalss.org/index.php/ust/article/view/29999.