1. Strings of Riemannian invariants, inequalities, ideal immersions and their applications;Chen,1998
2. Some new obstructions to minimal and Lagrangian isometric immersions;Chen;Japan. J. Math.,2000
3. Pseudo-Riemannian Geometry, δ-invariants and Applications;Chen,2011
4. δ-invariants, inequalities of submanifolds and their applications;Chen,2008
5. On the minimum eigenvalues of the Laplacians in Riemannian manifolds;Nagano;Sci. Papers College Gen. Edu. Univ. Tokyo,1961