@article{GDZPPN002226162,
title = {Lattice Points in a Circle and Divisors in Arithmetic Progressions.},
journal = {Manuscripta mathematica},
volume = {46},
year = {1984},
pages = {195-206},
zbl = {0528.10031},
url = {http://dml.mathdoc.fr/item/GDZPPN002226162}
}
Nowak, Werner Georg. Lattice Points in a Circle and Divisors in Arithmetic Progressions.. Manuscripta mathematica, Tome 46 (1984) pp. 195-206. http://gdmltest.u-ga.fr/item/GDZPPN002226162/