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Reference18 articles.
1. J.G. Aiken, J.A. Erdos, J.A. Goldstein, Unitary approximation of positive operators. Ill. J. Math. 24, 61–72 (1980)
2. N.I. Akheiser, I.M. Glazman, in Theory of Linear Operators in Hilbert Space, vol. II (Unger, New York, 1963)
3. J. Anderson, On normal derivations. Proc. Am. Math. Soc. 38, 135–140 (1973)
4. J. Anderson, C. Foias, Properties which normal operators share with derivations and related operators. Pac. J. Math. 61, 313–325 (1975)
5. S. Bouali, S. Cherki, Approximation by generalized commutators. Acta Sci. Math. (Szeged) 63, 272–278 (1997)