Itolmasova , S. ., M. Nurullayeva, and M. . Yaxiyaxonova. “XARTLI FORMULALAR VA UNING TADBIQI”. Natural Sciences in the Modern World: Theoretical and Practical Research, vol. 4, no. 1, Jan. 2025, pp. 33-36, https://inlibrary.uz/index.php/zdtf/article/view/63214.