@article{IM_1988__94_2_143624,
     author = {Michael H. Freedman},
     title = {Whitehead 3 is a },
     journal = {Inventiones mathematicae},
     pages = {175--182},
     publisher = {mathdoc},
     volume = {94},
     number = {2},
     year = {1988},
     zbl = {0678.57002},
     url = {http://geodesic.mathdoc.fr/item/IM_1988__94_2_143624/}
}