@article{MAN_1982__260_163653,
     author = {Wilfried Hausmann},
     title = {The {Fixed} {Points} of the {Symmetrie} {Hilbert} {Modular} {Group} of a {Real} {Quadratic} {Field} with {Arbitrary} {Discriminant.}},
     journal = {Mathematische Annalen},
     pages = {31--50},
     publisher = {mathdoc},
     volume = {260},
     year = {1982},
     zbl = {0467.10020},
     url = {http://geodesic.mathdoc.fr/item/MAN_1982__260_163653/}
}