@article{GDZPPN002197057,
title = {A non-convex generalization of the circle problem.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {316},
year = {1980},
pages = {136-145},
zbl = {0417.10042},
url = {http://dml.mathdoc.fr/item/GDZPPN002197057}
}
Nowak, Werner-Georg. A non-convex generalization of the circle problem.. Journal für die reine und angewandte Mathematik, Tome 316 (1980) pp. 136-145. http://gdmltest.u-ga.fr/item/GDZPPN002197057/