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Lua i Stíl Chicago (17ú heag.)Schmudgen, Konrad. Unbounded Self-adjoint Operators on Hilbert Space. Dordrecht: Springer Netherlands, 2012.
Lua MLA (8ú heag.)Schmudgen, Konrad. Unbounded Self-adjoint Operators on Hilbert Space. Springer Netherlands, 2012.
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