@article{GFA_1995__5_4_58194,
     author = {P. Sarnak and W. Luo and Z. Rudnick},
     title = {On {Selberg's} {Eigenvalue} {Conjecture.}},
     journal = {Geometric and functional analysis},
     pages = {387--401},
     publisher = {mathdoc},
     volume = {5},
     number = {4},
     year = {1995},
     zbl = {0844.11038},
     url = {http://geodesic.mathdoc.fr/item/GFA_1995__5_4_58194/}
}