TY  - JOUR
AU  - Michael S. Payne
TI  - Unit distance graphs with ambiguous chromatic number
JO  - The electronic journal of combinatorics
PY  - 2009
VL  - 16
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.37236/269/
DO  - 10.37236/269
ID  - 10_37236_269
ER  -