TY  - JOUR
AU  - J. Gresser
TI  - The range of a planar function with ambiguous points
JO  - Fundamenta Mathematicae
PY  - 1969
SP  - 129
EP  - 132
VL  - 65
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-65-2-129-132/
DO  - 10.4064/fm-65-2-129-132
LA  - en
ID  - 10_4064_fm_65_2_129_132
ER  -