TY - JOUR AU - Michael H. Freedman TI - A Surgery Sequence in Dimension Four; The Relations with Knot Concordance. JO - Inventiones mathematicae PY - 1982 SP - 195 EP - 226 VL - 68 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM_1982__68_142931/ ID - IM_1982__68_142931 ER -