TY  - JOUR
AU  - Magalhães, Luísa
TI  - Existence of $A_\infty $ weak homotopy equivalences between spectra for U-bordism with singularities
JO  - Portugaliae mathematica
PY  - 1988
SP  - 399
EP  - 410
VL  - 45
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1988__45_4_115641/
LA  - en
ID  - PORMA_1988__45_4_115641
ER  -