@article{JEMS_2010_12_5_a1,
     author = {Kannan Soundararajan and Matthew P. Young},
     title = {The second moment of quadratic twists of modular $L$-functions},
     journal = {Journal of the European Mathematical Society},
     pages = {1097--1116},
     publisher = {mathdoc},
     volume = {12},
     number = {5},
     year = {2010},
     doi = {10.4171/jems/224},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/224/}
}