TY  - JOUR
AU  - Lytchak, Alexander
AU  - Nagano, Koichi
AU  - Stadler, Stephan
TI  - CAT(0) 4–manifolds are Euclidean
JO  - Geometry & topology
PY  - 2024
SP  - 3285
EP  - 3308
VL  - 28
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.2140/gt.2024.28.3285/
DO  - 10.2140/gt.2024.28.3285
ID  - GT_2024_28_7_a6
ER  -