Template:Leeb1995
From Manifold Atlas
B. Leeb, -manifolds with(out) metrics of nonpositive curvature, Invent. Math. 122 (1995), no.2, 277–289. MR1358977 (97g:57015) Zbl 0840.53031
B. Leeb, -manifolds with(out) metrics of nonpositive curvature, Invent. Math. 122 (1995), no.2, 277–289. MR1358977 (97g:57015) Zbl 0840.53031