TY  - JOUR
AU  - Ferri, Massimo
TI  - Colour Switching and Homeomorphism of Manifolds
JO  - Canadian journal of mathematics
PY  - 1987
SP  - 8
EP  - 32
VL  - 39
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1987-002-5/
DO  - 10.4153/CJM-1987-002-5
ID  - 10_4153_CJM_1987_002_5
ER  -