@article{01353093, title = {Examples of Riemannian manifolds with positive curvature almost everywhere.}, journal = {Geometry \& Topology}, volume = {3}, year = {1999}, pages = {331-367}, doi = {10.2140/gt.1999.3.331}, zbl = {0963.53020}, language = {en}, url = {http://dml.mathdoc.fr/item/01353093} }
Petersen, Peter; Wilhelm, Frederick. Examples of Riemannian manifolds with positive curvature almost everywhere.. Geometry & Topology, Tome 3 (1999) pp. 331-367. doi : 10.2140/gt.1999.3.331. http://gdmltest.u-ga.fr/item/01353093/