TY  - JOUR
AU  - Bokowski, Jürgen
AU  - Guedes de Oliveira, A.
TI  - Simplicial convex 4-polytopes do not have the isotopy property
JO  - Portugaliae mathematica
PY  - 1990
SP  - 309
EP  - 318
VL  - 47
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1990__47_3_115720/
LA  - en
ID  - PORMA_1990__47_3_115720
ER  -