HALMOS, P. R. (1967). A Hilbert space problem book. American Book.
Chicago Style (17th ed.) ZitazioaHALMOS, Paul R. A Hilbert Space Problem Book. New York: American Book, 1967.
MLA (9th ed.) ZitazioaHALMOS, Paul R. A Hilbert Space Problem Book. American Book, 1967.
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