Balakrishnan, A. V. (1981). Applied functional analysis (2a. ed.). Springer-Verlag.
Chicago-čujuhus (17. p.)Balakrishnan, A. V. Applied Functional Analysis. 2a. ed. Nueva York: Springer-Verlag, 1981.
MLA-čujuhus (9. p.)Balakrishnan, A. V. Applied Functional Analysis. 2a. ed. Springer-Verlag, 1981.
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