no. 2
A characterization of spectral operators of finite type
Compositio Mathematica, Tome 26 (1973) no. 2, pp. 95-99. 
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     author = {Cleaver, Charles E.},
     title = {A characterization of spectral operators of finite type},
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     pages = {95--99},
     publisher = {Noordhoff International Publishing},
     volume = {26},
     number = {2},
     year = {1973},
     mrnumber = {320802},
     zbl = {0255.47042},
     language = {en},
     url = {http://www.numdam.org/item/CM_1973__26_2_95_0/}
}
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Cleaver, Charles E. A characterization of spectral operators of finite type. Compositio Mathematica, Tome 26 (1973) no. 2, pp. 95-99. http://www.numdam.org/item/CM_1973__26_2_95_0/

I Colojoara andC. Foias [1] Theory of Generalized Spectral Operators. New York: Gordon and Breach, 1968 | MR | Zbl

N. Dunford [2] Spectral operators, Pacific J. Math. 4 (1954), 321-354. | MR | Zbl

S.R. Foguel [3] The relation between a spectral operator and its scalar part, Pacific J. Math. 8 (1958) 51-65. | MR | Zbl

E. Hille and R.S. Phillips [4] Functional Analysis and Semi-Groups, Amer. Math. Soc. Coll. Publ., Vol. 31, Amer. Math. Soc., Providence, R. I., 1957. | MR | Zbl

S. Kantorovitz [5] The Ck-classification of certain operators in Lp ( ), Trans. Amer. Math. Soc. 132 (1968), 323-333. | MR | Zbl

T.V. Pachapagesan [6] Unitary operators in Banach spaces, Pacific J. Math. 22 (1967). 465-475. | MR | Zbl