@article{TRSPY_2005_248_a19,
     author = {K. I. Oskolkov},
     title = {The {Series} $\sum\sum\frac{e^{2\pi imnx}}{mn}$ and {a~Problem} of {Chowla}},
     journal = {Informatics and Automation},
     pages = {204--222},
     publisher = {mathdoc},
     volume = {248},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2005_248_a19/}
}