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@article{AM2_1980__20_182378, author = {Robert M. Tardiff}, title = {On a functional inequality arising in the construction of the product of several metric spaces.}, journal = {Aequationes mathematicae}, pages = {51--58}, publisher = {mathdoc}, volume = {20}, year = {1980}, zbl = {0432.39010}, url = {http://geodesic.mathdoc.fr/item/AM2_1980__20_182378/} }
Robert M. Tardiff. On a functional inequality arising in the construction of the product of several metric spaces.. Aequationes mathematicae, Tome 20 (1980), pp. 51-58. http://geodesic.mathdoc.fr/item/AM2_1980__20_182378/