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@article{AM2_1997__54_3_137700, author = {H. Stetkaer}, title = {Functional equations on abelian groups with involution.}, journal = {Aequationes mathematicae}, pages = {144--172}, publisher = {mathdoc}, volume = {54}, number = {3}, year = {1997}, zbl = {0899.39007}, url = {http://geodesic.mathdoc.fr/item/AM2_1997__54_3_137700/} }
H. Stetkaer. Functional equations on abelian groups with involution.. Aequationes mathematicae, Tome 54 (1997) no. 3, pp. 144-172. http://geodesic.mathdoc.fr/item/AM2_1997__54_3_137700/