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A. Aluthge, On
-hyponormal operators for
, Int. Eq. Op. Th. 13 (1990), 307
T. Ando, Operators with a norm condition, Acta Sci. Math. (Szeged) 33 (1972), 169-178
M. Cho and H. Jin, On
-hyponormal operators, Nihonkai Math. J. 6 (1995), 201-206
D. Xia, Spectral Theory of Hyponormal Operators, Birkhäuser Verlag, Boston, 1983
A. Aluthge, On
T. Ando, Operators with a norm condition, Acta Sci. Math. (Szeged) 33 (1972), 169-178
M. Cho and H. Jin, On
D. Xia, Spectral Theory of Hyponormal Operators, Birkhäuser Verlag, Boston, 1983
