@article{10_4007_annals_2010_171_343,
     author = {Vitali Kapovitch and Anton Petrunin and Wilderich Tuschmann},
     title = {Nilpotency, almost nonnegative curvature, and the gradient flow on {Alexandrov} spaces},
     journal = {Annals of mathematics},
     pages = {343--373},
     publisher = {mathdoc},
     volume = {171},
     number = {1},
     year = {2010},
     doi = {10.4007/annals.2010.171.343},
     mrnumber = {2630041},
     zbl = {1192.53040},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2010.171.343/}
}