中国科学院数学与系统科学研究院期刊网
Hypersurfaces with Parallel Ricci Curvature in Constantly Curved Manifold
Tong Zhu LI,Zhen GUO
Acta Mathematica Sinica, Chinese Series . 2004, (3): 587 -592 .  DOI: 10.12386/A2004sxxb0074