@article{10_4007_annals_2010_172_567,
     author = {Tim Dokchitser and Vladimir Dokchitser},
     title = {On the {Birch-Swinnerton-Dyer} quotients modulo squares},
     journal = {Annals of mathematics},
     pages = {567--596},
     publisher = {mathdoc},
     volume = {172},
     number = {1},
     year = {2010},
     doi = {10.4007/annals.2010.172.567},
     mrnumber = {2680426},
     zbl = {1223.11079},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2010.172.567/}
}