@article{GDZPPN002025396,
title = {On the Cosine-Sine Operator Functional Equations},
journal = {Aequationes mathematicae},
volume = {7},
year = {1971},
pages = {231-234},
zbl = {0232.47044},
url = {http://dml.mathdoc.fr/item/GDZPPN002025396}
}
BUCHE, A.B. On the Cosine-Sine Operator Functional Equations. Aequationes mathematicae, Tome 7 (1971) pp. 231-234. http://gdmltest.u-ga.fr/item/GDZPPN002025396/