1. D.G. Chen, Z. Wang, H. Li, Starshaped compact hypersurfaces with prescribed Weingarten curvature in warped product manifolds, Calc. Var. Partial Differential Equations57 (2018), no. 2, Art. 42, 26 pp.
2.D.G. Chen, H. Li,Second Eigenvalue of Paneitz Operators and Mean Curvature,Communications in Mathematical Physics(2011), Volume 305, Number 3, 555-562,
3.D.G. Chen, T. Zheng, Bounds for ratios of the membrane eigenvalues, J. Differential Equations 250 (2011), 1575-1590.
4.D.G. Chen, Extrinsic estimates for eigenvalues of the Dirac operator, Math. Z. (2009)262, 349-361.
5.D.G. Chen, Q.M. Cheng, Extrinsic estimates for eigenvalues of the Laplace operator, J. Math. Soc. Japan, 60 (2008), 325-339.