@article{GT_2012_16_4_a11,
     author = {W\"orner, Andreas},
     title = {A splitting theorem for nonnegatively curved {Alexandrov} spaces},
     journal = {Geometry & topology},
     pages = {2391--2426},
     publisher = {mathdoc},
     volume = {16},
     number = {4},
     year = {2012},
     doi = {10.2140/gt.2012.16.2391},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2012.16.2391/}
}