No'monova Kamolaxon Abdug'opir qizi. “4-O’LCHAMLI FAZODA NUQTALARNING KOLLINEARLIGINI TEKSHIRISH”. JOURNAL OF NEW CENTURY INNOVATIONS, vol. 90, no. 1, Dec. 2025, pp. 122-6, https://journalss.org/index.php/new/article/view/8392.