@article{CMH_1965__40_139300,
     author = {J. Levine and W. Browder},
     title = {Fibering manifolds over a circle.},
     journal = {Commentarii mathematici Helvetici},
     pages = {153--160},
     year = {1965},
     volume = {40},
     zbl = {0134.42802},
     url = {http://geodesic.mathdoc.fr/item/CMH_1965__40_139300/}
}