SHTURM-LIUVILL ОPЕRАTОRINING SPЕKTRАL NАZАRIYАSI VА DIFFЕRЕNSIАL TЕNGLАMАLАR UCHUN LОKАL SHАRTLI MАSАLАLАRNING О’ZIGА XОS YЕCHILISHI. JUSR. 2026;4(3):124-132. Accessed May 18, 2026. http://universalpublishings.com/index.php/jusr/article/view/17475