@article{10_4064_aa127_3_5,
     author = {A. Sankaranarayanan and J. Sengupta},
     title = {Zero-density estimate of $L$-functions
 attached to {Maass} forms},
     journal = {Acta Arithmetica},
     pages = {273--284},
     publisher = {mathdoc},
     volume = {127},
     number = {3},
     year = {2007},
     doi = {10.4064/aa127-3-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa127-3-5/}
}