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Number of items: **4**.

Yang, Changsen and Zhao, Yuliang:
*Weyl's theorem for class wF(p, r, q) operators.*
Acta scientiarum mathematicarum, (74) 1-2.
pp. 271-279.(2008)

Gao, Fugen and Yang, Changsen:
*Inequalities on powers of p-hyponormal operators.*
Acta scientiarum mathematicarum, (72) 3-4.
pp. 677-690.(2006)

Yang, Changsen and Li, Haiying:
*Powers of an invertible p - ω-hyponormal operator.*
Acta scientiarum mathematicarum, (71) 1-2.
pp. 363-370.(2005)

Yang, Changsen and Yuan, Jiangtao:
*Spectrum of class wF(p, r, q) operators for p + r ≤ 1 and q ≥ 1.*
Acta scientiarum mathematicarum, (71) 3-4.
pp. 767-779.(2005)