TY  - JOUR
AU  - Lallement, Gerard
TI  - On Free Semigroups and Ramsey Numbers
JO  - Canadian mathematical bulletin
PY  - 1974
SP  - 229
EP  - 232
VL  - 17
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-045-5/
DO  - 10.4153/CMB-1974-045-5
ID  - 10_4153_CMB_1974_045_5
ER  -