Abdujalilov , S. M. o‘g‘li, & Parpiyev , S. P. o‘g‘li. (2022). CHEGARAVIY SHARTLI IKKINCHI TARTIBLI DIFFERENSIAL TENGLAMALARNI YECHISHNING GALYORKIN USULI. Educational Research in Universal Sciences, 1(1), 125–129. Retrieved from http://erus.uz/index.php/er/article/view/486