B. H. Toshtemirov. “QO’SH TARTIBLI HILFER DIFFERENSIAL OPERATOR QATNASHGAN YUQORI TARTIBLI TENGLAMA UCHUN KOSHI MASALASI”. Kokand University Research Base (April 18, 2024): 409–412. Accessed July 4, 2024. https://scholar.kokanduni.uz/index.php/rb/article/view/356.