Freiling, G., & Yurko, V. Boundary value problems with regular singularities and singular boundary conditions. Wiley.
Chicago Style (17th ed.) CitationFreiling, G., and V. Yurko. Boundary Value Problems with Regular Singularities and Singular Boundary Conditions. Wiley.
MLA (9th ed.) CitationFreiling, G., and V. Yurko. Boundary Value Problems with Regular Singularities and Singular Boundary Conditions. Wiley.
Warning: These citations may not always be 100% accurate.