@article{MM2_1992__76_1_155751,
     author = {Ulrich Koschorke},
     title = {Belts and k-invariants of link maps in spheres.},
     journal = {Manuscripta mathematica},
     pages = {241--250},
     year = {1992},
     volume = {76},
     number = {1},
     zbl = {0791.57016},
     url = {http://geodesic.mathdoc.fr/item/MM2_1992__76_1_155751/}
}