@article{MZ_1974__138_172080,
     author = {Peter L\"offler and Larry Smith},
     title = {Line {Bundles} over {Framed} {Manifolds.}},
     journal = {Mathematische Zeitschrift},
     pages = {35--52},
     publisher = {mathdoc},
     volume = {138},
     year = {1974},
     zbl = {0311.55011},
     url = {http://geodesic.mathdoc.fr/item/MZ_1974__138_172080/}
}