TY  - JOUR
AU  - Haruki, Hiroshi
TI  - A functional equation connected with the sine addition theorem
JO  - Portugaliae mathematica
PY  - 1976
SP  - 75
EP  - 79
VL  - 35
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1976__35_2_115278/
LA  - en
ID  - PORMA_1976__35_2_115278
ER  -