“YANGI TUG‘ILGAN CHAQALOQLAR ASFIKSIYASI HKK R 21.(R 21.0-R 21.9 )”, UXIJ, vol. 2, no. 6, pp. 30–37, Jun. 2025, Accessed: Jun. 06, 2026. [Online]. Available: https://universaljurnal.uz/index.php/jurnal/article/view/3131