@article{GDZPPN002550334,
title = {Hossz\'u's functional equation over rings generated by their units.},
journal = {Aequationes mathematicae},
volume = {20},
year = {1980},
pages = {121-128},
zbl = {0479.39003},
url = {http://dml.mathdoc.fr/item/GDZPPN002550334}
}
Davison, T.M.K.; Redlin, Lothar. Hosszú's functional equation over rings generated by their units.. Aequationes mathematicae, Tome 20 (1980) pp. 121-128. http://gdmltest.u-ga.fr/item/GDZPPN002550334/