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@article{AM2_1982__25_136976, author = {J\"urg R\"atz}, title = {On orthogonally additive mappings. {(Short} {Communication).}}, journal = {Aequationes mathematicae}, pages = {317--318}, publisher = {mathdoc}, volume = {25}, year = {1982}, zbl = {0569.39006}, url = {http://geodesic.mathdoc.fr/item/AM2_1982__25_136976/} }
Jürg Rätz. On orthogonally additive mappings. (Short Communication).. Aequationes mathematicae, Tome 25 (1982), pp. 317-318. http://geodesic.mathdoc.fr/item/AM2_1982__25_136976/