@article{10_4007_annals_2008_167_1079,
     author = {Christoph B\"ohm and Burkhard Wilking},
     title = {Manifolds with positive curvature operators are space forms},
     journal = {Annals of mathematics},
     pages = {1079--1097},
     publisher = {mathdoc},
     volume = {167},
     number = {3},
     year = {2008},
     doi = {10.4007/annals.2008.167.1079},
     mrnumber = {2415394},
     zbl = {1185.53073},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2008.167.1079/}
}