TY  - JOUR
AU  - Jr., I. Ruzsa
TI  - On a Problem of P. Erdös
JO  - Canadian mathematical bulletin
PY  - 1972
SP  - 309
EP  - 310
VL  - 15
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1972-058-2/
DO  - 10.4153/CMB-1972-058-2
ID  - 10_4153_CMB_1972_058_2
ER  -