TY  - JOUR
AU  - Takaguchi, Makoto
TI  - Centers of mass for operator-families
JO  - Glasgow mathematical journal
PY  - 1992
SP  - 123
EP  - 126
VL  - 34
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500008612/
DO  - 10.1017/S0017089500008612
ID  - 10_1017_S0017089500008612
ER  -