1. Carleman estimates for the Laplace-Beltrami equation on complex manifolds;Andreotti;Inst. HautesE´tudes Sci. Publ. Math.,1965
2. L2-index theorems on certain complete manifolds;Bru¨ning;J. Differential Geom.,1990
3. Spectral geometry of singular Riemannian spaces;Cheeger;J. Differential Geom.,1983
4. On the Hodge theory of Riemannian pseudomanifolds;Cheeger,1980
5. On the spectral geometry of spaces with cone-like singularities;Cheeger,1979