@article{MZ_1987__196_173890,
     author = {Nicholas J. Kuhn},
     title = {The {Transfer} and {James-Hopf} {Invariants.}},
     journal = {Mathematische Zeitschrift},
     pages = {391--406},
     publisher = {mathdoc},
     volume = {196},
     year = {1987},
     zbl = {0609.55006},
     url = {http://geodesic.mathdoc.fr/item/MZ_1987__196_173890/}
}