@inbookFouvry_Klüners_2006, place=Berlin, Heidelberg, title=Cohen–Lenstra Heuristics of Quadratic Number Fields, DOI=10.1007/11792086_4, booktitle=Lecture Notes in Computer Science, publisher=Springer Berlin Heidelberg, author=Fouvry, Étienne and Klüners, Jürgen, year=2006