@article{AA_1994_6_6_a2,
     author = {A. B. Venkov},
     title = {Approximation of {Maass} forms by analytic modular forms},
     journal = {Algebra i analiz},
     pages = {51--64},
     publisher = {mathdoc},
     volume = {6},
     number = {6},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1994_6_6_a2/}
}