TY  - JOUR
AU  - Ilie Corovei
TI  - The cosine functional equation for nilpotent groups. (Short Communication).
JO  - Aequationes mathematicae
PY  - 1976
SP  - 511
EP  - 511
VL  - 14
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1976__14_136619/
ID  - AM2_1976__14_136619
ER  -