@article{10_4007_annals_2005_162_1031,
     author = {Manjul Bhargava},
     title = {The density of discriminants of quartic rings and fields},
     journal = {Annals of mathematics},
     pages = {1031--1063},
     publisher = {mathdoc},
     volume = {162},
     number = {2},
     year = {2005},
     doi = {10.4007/annals.2005.162.1031},
     mrnumber = {2183288},
     zbl = {1159.11045},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2005.162.1031/}
}