%0 Journal Article %A K. I. Oskolkov %T The Series $\sum\sum\frac{e^{2\pi imnx}}{mn}$ and a~Problem of Chowla %J Informatics and Automation %D 2005 %P 204-222 %V 248 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_2005_248_a19/ %G ru %F TRSPY_2005_248_a19