TY - JOUR AU - Davis, Christopher W. TI - Concordance, Crossing Changes, and Knots in Homology Spheres JO - Canadian mathematical bulletin PY - 2020 SP - 744 EP - 754 VL - 63 IS - 4 UR - http://geodesic.mathdoc.fr/articles/10.4153/S0008439519000791/ DO - 10.4153/S0008439519000791 ID - 10_4153_S0008439519000791 ER -