TY  - JOUR
AU  - Kannappan, P.I.
TI  - Characterizing topology on an Abelian semigroup by a functional equation
JO  - Portugaliae mathematica
PY  - 1969
SP  - 97
EP  - 101
VL  - 28
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1969__28_2_115088/
LA  - en
ID  - PORMA_1969__28_2_115088
ER  -