@article{AM_2001_153_1_a0,
     author = {F. Reese Harvey and H. Blaine Lawson jun.},
     title = {Finite volume flows and {Morse} theory},
     journal = {Annals of mathematics},
     publisher = {mathdoc},
     volume = {153},
     number = {1},
     year = {2001},
     url = {http://geodesic.mathdoc.fr/item/AM_2001_153_1_a0/}
}