TY - JOUR AU - Ranicki, Andrew TI - Singularities, double points, controlled topology and chain duality JO - Documenta mathematica PY - 1999 SP - 1 EP - 59 VL - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DOCMA_1999__4__a19/ LA - en ID - DOCMA_1999__4__a19 ER -