@article{AM_2000_152_2_a2,
     author = {K. Soundararajan},
     title = {Nonvanishing of quadratic {Dirichlet} $L$-functions at $s=\frac{1}{2}$},
     journal = {Annals of mathematics},
     publisher = {mathdoc},
     volume = {152},
     number = {2},
     year = {2000},
     url = {http://geodesic.mathdoc.fr/item/AM_2000_152_2_a2/}
}