@article{10_4064_aa118_3_2,
     author = {Yuk-Kam Lau and Kai-Man Tsang},
     title = {A mean square formula for central values of
 twisted automorphic $L$-functions},
     journal = {Acta Arithmetica},
     pages = {231--262},
     publisher = {mathdoc},
     volume = {118},
     number = {3},
     year = {2005},
     doi = {10.4064/aa118-3-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa118-3-2/}
}