(en) Nelson Dunford, Jacob T. Schwartz Linear Operators, Part I General Theory. John Wiley & Sons Inc., New York, 1958. (ISBN0-471-60848-3)
(en) Nelson Dunford, Jacob T. Schwartz Linear Operators, Part II Spectral Theory, Self Adjoint Operators in Hilbert Space. John Wiley & Sons Inc., New York, 1963. (ISBN0-471-60847-5)
(en) Nelson Dunford, Jacob T. Schwartz Linear Operators, Part III Spectral Operators. John Wiley & Sons Inc., New York, 1971. (ISBN0-471-60846-7)