TY  - JOUR
AU  - Erdös, P.
TI  - Solution by P. J. Ryan, University of Toronto
JO  - Canadian mathematical bulletin
PY  - 1965
SP  - 112
EP  - 112
VL  - 8
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500024310/
DO  - 10.1017/S0008439500024310
ID  - 10_1017_S0008439500024310
ER  -