@article{GDZPPN002486911,
title = {On the Asymptotic Behaviour of the Ideal Counting Function in Quadratic Number Fields.},
journal = {Monatshefte f\"ur Mathematik},
volume = {108},
year = {1989},
pages = {301-324},
zbl = {0713.11071},
url = {http://dml.mathdoc.fr/item/GDZPPN002486911}
}
Müller, Wolfgang. On the Asymptotic Behaviour of the Ideal Counting Function in Quadratic Number Fields.. Monatshefte für Mathematik, Tome 108 (1989) pp. 301-324. http://gdmltest.u-ga.fr/item/GDZPPN002486911/