Yang Changsen; Zhao Yuliang: Weyl's theorem for class wF(p, r, q) operators. In: Acta scientiarum mathematicarum, (74) 1-2. pp. 271-279. (2008)
Gao Fugen; Yang Changsen: Inequalities on powers of p-hyponormal operators. In: Acta scientiarum mathematicarum, (72) 3-4. pp. 677-690. (2006)
Yang Changsen; Li Haiying: Powers of an invertible p - ω-hyponormal operator. In: Acta scientiarum mathematicarum, (71) 1-2. pp. 363-370. (2005)
Yang Changsen; Yuan Jiangtao: Spectrum of class wF(p, r, q) operators for p + r ≤ 1 and q ≥ 1. In: Acta scientiarum mathematicarum, (71) 3-4. pp. 767-779. (2005)