@article{10_4153_CMB_2015_004_4,
     author = {Naylor, Geoff and Rolfsen, Dale},
     title = {Generalized {Torsion} in {Knot} {Groups}},
     journal = {Canadian mathematical bulletin},
     pages = {182--189},
     year = {2016},
     volume = {59},
     number = {1},
     doi = {10.4153/CMB-2015-004-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2015-004-4/}
}