TY  - JOUR
AU  - Salamon, Peter
AU  - Erdös, Paul
TI  - The Solution to a Problem of Grünbaum
JO  - Canadian mathematical bulletin
PY  - 1988
SP  - 129
EP  - 138
VL  - 31
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1988-020-2/
DO  - 10.4153/CMB-1988-020-2
ID  - 10_4153_CMB_1988_020_2
ER  -