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@article{MAN_1969__181_161839, author = {F.S. KOEHL}, title = {Difference {Properties} for {Banach-Valued} {Functions.}}, journal = {Mathematische Annalen}, pages = {288--296}, publisher = {mathdoc}, volume = {181}, year = {1969}, zbl = {0164.15901}, url = {http://geodesic.mathdoc.fr/item/MAN_1969__181_161839/} }
F.S. KOEHL. Difference Properties for Banach-Valued Functions.. Mathematische Annalen, Tome 181 (1969), pp. 288-296. http://geodesic.mathdoc.fr/item/MAN_1969__181_161839/