TY  - JOUR
AU  - Roman Sikorski
TI  - Quasi-inverses of morphisms
JO  - Fundamenta Mathematicae
PY  - 1973
SP  - 343
EP  - 358
VL  - 81
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-81-4-343-358/
DO  - 10.4064/fm-81-4-343-358
LA  - fr
ID  - 10_4064_fm_81_4_343_358
ER  -