Fuhrman, P. A. (1981). Linear Systems And Operators In Hilbert Space Paul A. Fuhrman. McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFuhrman, Paul A. Linear Systems And Operators In Hilbert Space Paul A. Fuhrman. McGraw-Hill, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFuhrman, Paul A. Linear Systems And Operators In Hilbert Space Paul A. Fuhrman. McGraw-Hill, 1981.
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