[[1] S. Y. Cheng, Eigenvalue comparison and its geometric application, Math. Z. 143 (1975), 289-297.10.1007/BF01214381]Search in Google Scholar
[[2] B. Chow, P. Lu, L. Ni, Hamilton’s Ricci Flow. Lectures in Contemporary Mathematics, 3, Science Press and Graduate Studies in Mathematics, 77, American Mathematical Society (co-publication), 2006.10.1090/gsm/077]Search in Google Scholar
[[3] P. Li and S. T. Yau, Eigenvalues of a compact Riemannian manifold, AMS Proc. Symp. Pure Math. 36 (1980), 205-239.10.1090/pspum/036/573435]Search in Google Scholar
[[4] R. Schoen and S. T. Yau, Lectures on di erential geometry. Conference Proceedings and Lecture Notes in Geometry and Topology, I. International Press, Cambridge, MA, 1994.]Search in Google Scholar
[[5] J. Q. Zhong and H. C. Yang, On the estimate of first eigenvalue of a compact Riemannian manifold, Sci. Sinica Ser. A 27 (1984), 1265-1273.]Search in Google Scholar
