“YUQORI TARTIBLI DIFFERENSIAL TENGLAMALAR. TARTIBI PASAYUVCHI DIFFERENSIAL TENGLAMALAR. IKKINCHI TARTIBLI O’ZGARMAS KOEFFISIYENTLI, BIR JINSLI VA BIR JINSLI BO’LMAGAN DIFFERENSIAL TENGLAMALAR”. 2022. European Journal of Interdisciplinary Research and Development 10 (December): 151-56. https://ejird.journalspark.org/index.php/ejird/article/view/242.