@article{10_4153_S0008439519000791,
     author = {Davis, Christopher W.},
     title = {Concordance, {Crossing} {Changes,} and {Knots} in {Homology} {Spheres}},
     journal = {Canadian mathematical bulletin},
     pages = {744--754},
     year = {2020},
     volume = {63},
     number = {4},
     doi = {10.4153/S0008439519000791},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008439519000791/}
}