@article{AFST_2005_6_14_3_459_0,
     author = {Kapovich, Michael},
     title = {Flats in $3$-manifolds},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {459--499},
     publisher = {Universit\'e Paul Sabatier, Institut de math\'ematiques},
     address = {Toulouse},
     volume = {Ser. 6, 14},
     number = {3},
     year = {2005},
     mrnumber = {2172587},
     zbl = {1085.57003},
     language = {en},
     url = {http://www.numdam.org/item/AFST_2005_6_14_3_459_0/}
}