中国科学院数学与系统科学研究院期刊网
On the Spectrum of the Laplacian on a Riemannian Manifold with a Pole
Pei He WANG, Chun Li SHEN
Acta Mathematica Sinica, Chinese Series . 2005, (5): 985 -992 .  DOI: 10.12386/A2005sxxb0120