@article{GDZPPN00248630X,
title = {Primitive Lattice Points in Rational Ellipses and Relates Arithmetic Functions.},
journal = {Monatshefte f\"ur Mathematik},
volume = {105},
year = {1988},
pages = {57-64},
zbl = {0678.10032},
url = {http://dml.mathdoc.fr/item/GDZPPN00248630X}
}
Nowak, Werner Georg. Primitive Lattice Points in Rational Ellipses and Relates Arithmetic Functions.. Monatshefte für Mathematik, Tome 105 (1988) pp. 57-64. http://gdmltest.u-ga.fr/item/GDZPPN00248630X/