@article{GDZPPN002042460, title = {Functional equations on abelian groups with involution.}, journal = {Aequationes mathematicae}, volume = {53}, year = {1997}, pages = {144-172}, zbl = {0899.39007}, url = {http://dml.mathdoc.fr/item/GDZPPN002042460} }
Stetkaer, H. Functional equations on abelian groups with involution.. Aequationes mathematicae, Tome 53 (1997) pp. 144-172. http://gdmltest.u-ga.fr/item/GDZPPN002042460/