@article{10_4153_CMB_1999_031_6,
     author = {Austin, David and Rolfsen, Dale},
     title = {Homotopy of {Knots} and the {Alexander} {Polynomial}},
     journal = {Canadian mathematical bulletin},
     pages = {257--262},
     year = {1999},
     volume = {42},
     number = {3},
     doi = {10.4153/CMB-1999-031-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1999-031-6/}
}