@article{MAN_1983__265_163824,
     author = {Victor Bangert},
     title = {Manifolds with {Geodesic} {Chords} of {Constant} {Length.}},
     journal = {Mathematische Annalen},
     pages = {273--282},
     publisher = {mathdoc},
     volume = {265},
     year = {1983},
     zbl = {0508.53055},
     url = {http://geodesic.mathdoc.fr/item/MAN_1983__265_163824/}
}