@article{10_4007_annals_2005_161_579, author = {Carlos Olmos}, title = {A geometric proof of the {Berger} {Holonomy} {Theorem}}, journal = {Annals of mathematics}, pages = {579--588}, publisher = {mathdoc}, volume = {161}, number = {1}, year = {2005}, doi = {10.4007/annals.2005.161.579}, mrnumber = {2150392}, zbl = {1082.53048}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2005.161.579/} }