TY  - JOUR
AU  - F. Bagemihl
TI  - The hypothesis $2^{ℵ_0} ≤ ℵ_n$ and ambiguous points of planar functions
JO  - Fundamenta Mathematicae
PY  - 1967
SP  - 73
EP  - 77
VL  - 61
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-61-1-73-77/
DO  - 10.4064/fm-61-1-73-77
LA  - en
ID  - 10_4064_fm_61_1_73_77
ER  -