@article{MS2_1967__21_166025,
     author = {Ib Madsen and Leif Kristensen},
     title = {Note on {Whitehead} {Products} in {Spheres.}},
     journal = {Mathematica Scandinavica},
     pages = {301--314},
     publisher = {mathdoc},
     volume = {21},
     year = {1967},
     zbl = {0176.21002},
     url = {http://geodesic.mathdoc.fr/item/MS2_1967__21_166025/}
}