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PharmacyAstronomySpectroscopic AnalysisSpectral Data ProcessingSpectroscopic Variability
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General Theory of Banach Algebras.
E. H. Batho, C. E. Rickart · American Mathematical Monthly · 1961 · 1.2K citations · Full text
A survey of the theory of spectral operators
Nelson Dunford · Bulletin of the American Mathematical Society · 1958 · 235 citations · Full text
J. D. Newburgh · Duke Mathematical Journal · 1951 · 133 citations