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@article{AM2_1972__8_136279, author = {P. Erd\"os and J. Marshall Ash and L.A. Rubel}, title = {Very {Slowly} {Varying} {Functions.} {(Short} {Communications).}}, journal = {Aequationes mathematicae}, pages = {191--192}, publisher = {mathdoc}, volume = {8}, year = {1972}, url = {http://geodesic.mathdoc.fr/item/AM2_1972__8_136279/} }
P. Erdös; J. Marshall Ash; L.A. Rubel. Very Slowly Varying Functions. (Short Communications).. Aequationes mathematicae, Tome 8 (1972), pp. 191-192. http://geodesic.mathdoc.fr/item/AM2_1972__8_136279/