TY  - JOUR
AU  - Barrar, Richard B.
TI  - Proof of the Fixed Point Theorems of Poincaré and Birkhoff
JO  - Canadian journal of mathematics
PY  - 1967
SP  - 333
EP  - 343
VL  - 19
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1967-024-5/
DO  - 10.4153/CJM-1967-024-5
ID  - 10_4153_CJM_1967_024_5
ER  -