TY  - JOUR
AU  - Lau, Anthony To-Ming
TI  - Invariant Means on Dense Subsemigroups of Topological Groups
JO  - Canadian journal of mathematics
PY  - 1971
SP  - 797
EP  - 801
VL  - 23
IS  - 5
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-088-4/
DO  - 10.4153/CJM-1971-088-4
ID  - 10_4153_CJM_1971_088_4
ER  -