Janiqulov, Q. K. . “PARAMETRGA BOG‘LIQ DARAJALI FUNKSIYANING ASOSIY XOSSALARI VA QO’LLANILISHI”. INTEGRATION OF SCIENCE, EDUCATION AND PRACTICE. SCIENTIFIC-METHODICAL JOURNAL, vol. 3, no. 4, May 2022, pp. 336-44, https://bilig.academiascience.org/index.php/isepsmj/article/view/475.