中国科学院数学与系统科学研究院期刊网
Semisimple Extensions of Hopf Algebra and Homological Dimension of Invariants for Hopf Actions
Jia Gui ZHU(1),Liang Yun ZHUAN
Acta Mathematica Sinica, Chinese Series . 2003, (1): 137 -142 .  DOI: 10.12386/A2003sxxb0019