Li︠u︡sternik, L. A., & Sobolev, V. I. Elements of functional analysis.
Chicago Style (17th ed.) CitationLi︠u︡sternik, L. A., and V. I. Sobolev. Elements of Functional Analysis.
MLA (9th ed.) CitationLi︠u︡sternik, L. A., and V. I. Sobolev. Elements of Functional Analysis.
Warning: These citations may not always be 100% accurate.