TY  - JOUR
AU  - Atkinson, F. V.
TI  - On a Problem of Erdös and Szekeres
JO  - Canadian mathematical bulletin
PY  - 1961
SP  - 7
EP  - 12
VL  - 4
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1961-002-5/
DO  - 10.4153/CMB-1961-002-5
ID  - 10_4153_CMB_1961_002_5
ER  -