%0 Journal Article %A P. Erdös %A J. Marshall Ash %A L.A. Rubel %T Very Slowly Varying Functions. (Short Communications). %J Aequationes mathematicae %D 1972 %P 191-192 %V 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1972__8_136279/ %F AM2_1972__8_136279