@article{CMH_1980__55_139847,
     author = {Eva Bayer},
     title = {Factorisation is not unique for higher dimensional knots.},
     journal = {Commentarii mathematici Helvetici},
     pages = {583--592},
     publisher = {mathdoc},
     volume = {55},
     year = {1980},
     zbl = {0477.57012},
     url = {http://geodesic.mathdoc.fr/item/CMH_1980__55_139847/}
}