Conway, J. B. (1981). Subnormal operators. Pitman Advanced Pub. Program.
Lua i Stíl Chicago (17ú heag.)Conway, John B. Subnormal Operators. Boston: Pitman Advanced Pub. Program, 1981.
Lua MLA (9ú heag.)Conway, John B. Subnormal Operators. Pitman Advanced Pub. Program, 1981.
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