1. Y. A. Abramovitch, E. L. Arenson, and A. K. Kitover, Banach 𝐶(𝐾)-modules and operators preserving disjointness, Pitman Research Notes, no. 277, Wiley, New York, 1992.
2. Strongly reductive operators are normal;Apostol, Constantin;Acta Sci. Math. (Szeged),1976
3. On strongly reductive algebras;Apostol, Constantin;Rev. Roumaine Math. Pures Appl.,1976
4. Notes on extensions of 𝐶^{*}-algebras;Arveson, William;Duke Math. J.,1977
5. CBMS Regional Conference Series in Mathematics;Arveson, William,1984