@article{SM_2009_200_3_a0,
     author = {D. V. Bolotov},
     title = {Foliations of nonnegative curvature on closed 3-dimensional manifolds},
     journal = {Sbornik. Mathematics},
     pages = {313--324},
     year = {2009},
     volume = {200},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2009_200_3_a0/}
}