“SHTURM-LIUVILL ОPЕRАTОRINING SPЕKTRАL NАZАRIYАSI VА DIFFЕRЕNSIАL TЕNGLАMАLАR UCHUN LОKАL SHАRTLI MАSАLАLАRNING О’ZIGА XОS YЕCHILISHI” (2026) Journal of Universal Science Research, 4(3), pp. 124–132. doi:10.66301/jusr.v4i3.17475.