@article{GDZPPN002039397,
title = {On Jensen's functional equation.},
journal = {Aequationes mathematicae},
volume = {44},
year = {1992},
pages = {211-218},
zbl = {0755.39008},
url = {http://dml.mathdoc.fr/item/GDZPPN002039397}
}
Vasudeva, H.L.; Parnami, J.C. On Jensen's functional equation.. Aequationes mathematicae, Tome 44 (1992) pp. 211-218. http://gdmltest.u-ga.fr/item/GDZPPN002039397/