@article{10_4064_cm_6_1_271_281,
     author = {J. Whitehead},
     title = {On finite cocycles and the sphere theorem},
     journal = {Colloquium Mathematicum},
     pages = {271--281},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {1958},
     doi = {10.4064/cm-6-1-271-281},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-6-1-271-281/}
}