TY  - JOUR
AU  - Gunter Lorenzen
TI  - Why Means in Two Arguments are Special.
JO  - Elemente der Mathematik
PY  - 1994
SP  - 32
EP  - 37
VL  - 49
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ELMA_1994__49_1_141557/
ID  - ELMA_1994__49_1_141557
ER  -